When S1 and S2 Are Open the Ammeter Reading Is 0.6 a

Meters

Among the most common meters used there are the ohmmeter, the ammeter and the voltmeter. The ohmmeter is used to measure the value of resistance. Information technology consists of a milliammeter calibrated to read in ohms, a battery and resistors. The meter is connected in parallel and the circuit is not opened when its resistance is measured.

The readings on the scale show the measured value. The ammeter is used to measure out the value of current. When the ammeter is used the excursion should be opened at i pointand the terminals of the meter should be connected to it. One

should take into consideration that the positive last of the meter is connected to the positive concluding of the source; the negative terminal - to the negative  terminal of the source. The ammeter should exist continued in series. The readings on the scale evidence the measured value.

3. Complete the sentences using the correct variant:

1. The ammeter is

a) a common meter.

b) an uncommon meter.

2. In order to measure out the value of current

a) the ohmmeter is used,

b) the voltmeter is used.

c) the ammeter is used.

3. A meter has

a) positive terminals only.

b) negative terminals merely.

c) positive and negative terminals.

4. When the ammeter is used

a) the circuit should exist opened.

b) the excursion should non exist opened.

5. The ammeter should exist continued

 a) in serial,

b) in parallel.

6. One should accept into consideration that

 a) the positive terminal should be connected to the negative last.

b) the positive final should be connected to the positive concluding of the source.

Pair work. Put these questions to your groupmate. Let him/her answer them.

one. What is the ammeter used for?

2. What is the voltmeter used for?

three. What is the ohmmeter used for?

4. What terminals does a meter take?

five. Should the measured circuit be opened when the voltmeter is used?

6. Should the measured circuit exist opened when the ammeter is used?

7. In what way should the voltmeter be connected to the circuit?

8. In what way should the ammeter be connected to the excursion?

ix. What is the deviation between a voltmeter and an ammeter?

10. What common meters are used to measure the values in a excursion?

Практическое занятие 5. Резисторы

Lesson v. Resistors

1. Read and learn the words:

chapters - емкость

power - мощность

heat - теплота, нагрев

charge per unit - скорость, степень

to produce - производить

to change - менять(ся)

to vary - варьировать(ся)

low - низкий

high - высокий

fixed – постоянный

any - (зд.) любой

variable - переменный

the (more than)... the (more) чем (больше) ... тем (больше)

two. Translate into Russian using чем ... тем :

one. The more than one studies nature, the amend ane knows its laws.

2. The longer one learns, the more one knows.

three. The higher the atmosphere, the less is its pressure.

four. The heavier the object, the more work 1 has to do in order to lift it.

5. The greater the number of gratuitous electrons in any metal, the higher is its

conductivity.

three. Translate into Russian. Mind no.

1. In that location is no energy in this auto.

2. No charges move through an open excursion.

three. No material is a perfect conductor of electricity.

4. No electric mechanism is used without protection.

five. No special cloth is needed in this case.

Read and interpret the text.

Resistors

A resistor is 1 of the nearly common elements of whatsoever circuit. Resistors are used: 1. to reduce the value of electric current in the circuit; 2. to produce IR voltage drop and in this way to alter the value of the voltage. When current is passing through a  resistor its temperature rises high. The higher the value of current the higher is the temperature o f a resistor. Each resistor has a maximum temperature to which information technology may exist heated without a trouble. If the temperature rises college the resistor gets

open and opens the circuit. Resistors are rated in watts. The watt is the rate at which electric free energy is supplied when a current of 1 ampere is passing at a potential difference of one volt. A resistor is rated as a I-W resistor if its resistance

equals i,000,000 ohms and its electric current-carrying capacity equals I/i,000,000 amp, since P = E x I = IR x I = I²R where P - power is given in watts, R - resistance is given in ohms and I - current is given in amperes. If a resistor has a resistance of merely ii ohms but its current-carrying chapters equals two,000 amp, it is rated as a 8,000,000-Westward resistor. Some resistors have a constant value - these are fixed resistors, the value of other resistors may exist varied - these are variable resistors.

5. Complete the sentences using the correct variant:

one. A resistor is used

a) to measure the resistance.

b) to reduce the current.

c) to change the resistance.

d) to produce IR voltage drib.

two. When current passes through a resistor

 a) its temperature drops.

b) its temperature rises.

three. Resistors are rated

a) in ohms.

b) in volts.

c) in watts.

4. Power is given

a) in amperes.

b) in watts.

5. Stock-still resistors accept

a) a constant value.

b) a variable value.

6. The value of a variable resistor

a) is fixed.

b) is varied.

7. A two-ohm resistor rated every bit a 8,000,000-W resistor

a) has a current-carrying capacity equal to 2,000 amp.

b) has a current-carrying capacity equal to 200 amp.

Pair work. Put these questions to your groupmate and let him/her answer them.

1. What is a resistor used for?

2. When does the temperature of a resistor ascent?

3. What element is used to change the value of voltage?

four. How are resistors rated?

5. What types of resistors exercise you lot know?

6. When does a resistor get open?

seven. What does an open resistor issue in?

8. What is the difference betwixt a fixed resistor and a variable resistor?

9. How much is the current-carrying capacity of a two-ohm resistor?

10. What resistors take a variable value?

Практическое занятие 6. Гальванические элементы

Lesson 6. Electric Cells

1. Read and learn the words:

Cell - элемент

output - емкость, мощность

bulb - электрическая лампа

to light - зажигать, освещать

to increase - увеличиваться), возрастать

to substitute - заменять

...and then on - и так далее

Read and translate the text.

Electrical Cells

An electric cell is used to produce and supply electric energy. Information technology consists of an electrolyte and ii electrodes. Electrodes are used equally terminals, they connect the prison cell to the circuit - current passes through the terminals and the seedling lights.

Cells tin can be connected in series, in parallel and in series-parallel. In order to increase the current capacity cells should be continued in parallel. In order to increment the voltage output cells should be connected in series. In example a battery has a large current chapters and a big voltage output, its cells are connected in series-parallel.

When cells are connected in serial the positive terminal of one prison cell is connected to the negative terminal of the 2nd cell, the positive terminal of the second cell - to the negative last of the third ... and so on.

When cells are connected in parallel their negative terminals are continued together and their positive terminals are also connected. In case a cell has a trouble information technology stops operating or operates badly. This cell should be substituted past another one.

3. Complete the sentences using the correct variant:

i. A cell is used

a) to increase the voltage output.

b) to reduce the current chapters.

c) to supply electric energy.

2. The terminals of a cell are used

a) to conduct electric current.

b) to increase voltage.

c) to connect the bombardment to a excursion.

3. When cells are connected in series

a) all the positive terminals are connected together.

b) all the negative terminals are connected together.

c) the positive terminal of one cell is connected to the negative last of the second.

four. Cells are connected in series in club

a) to increment the current capacity.

b) to increment the voltage output.

five. In society to increase the current chapters

 a) cells are continued in series,

b) cells are continued in parallel.

4. Reply the following questions:

1. What is a cell used for?

ii. What does a cell consist of?

iii. What is the function of the terminals?

iv. In what style are cells connected in order to increase the voltage output?

five. In what way are cells connected in order to increase the current capacity?

6. In what way are the terminals of series cells connected?

seven. In what case does a jail cell finish operating?

eight. What should be done in example information technology stops operating?

Meters

Among the most common meters used in that location are the ohmmeter, the ammeter and the voltmeter. The ohmmeter is used to measure the value of resistance. It consists of a milliammeter calibrated to read in ohms, a bombardment and resistors. The meter is continued in parallel and the circuit is not opened when its resistance is measured.

The readings on the calibration testify the measured value. The ammeter is used to measure the value of electric current. When the ammeter is used the circuit should be opened at 1 pointand the terminals of the meter should be connected to it. One

should take into consideration that the positive terminal of the meter is connected to the positive terminal of the source; the negative terminal - to the negative  last of the source. The ammeter should exist connected in series. The readings on the scale show the measured value.

3. Complete the sentences using the correct variant:

1. The ammeter is

a) a common meter.

b) an uncommon meter.

2. In order to measure the value of current

a) the ohmmeter is used,

b) the voltmeter is used.

c) the ammeter is used.

3. A meter has

a) positive terminals only.

b) negative terminals only.

c) positive and negative terminals.

4. When the ammeter is used

a) the circuit should be opened.

b) the circuit should not exist opened.

five. The ammeter should be connected

 a) in serial,

b) in parallel.

6. Ane should take into consideration that

 a) the positive terminal should be connected to the negative concluding.

b) the positive terminal should be connected to the positive concluding of the source.

Pair work. Put these questions to your groupmate. Let him/her respond them.

i. What is the ammeter used for?

ii. What is the voltmeter used for?

iii. What is the ohmmeter used for?

4. What terminals does a meter have?

v. Should the measured circuit exist opened when the voltmeter is used?

half dozen. Should the measured circuit exist opened when the ammeter is used?

7. In what way should the voltmeter exist continued to the circuit?

8. In what way should the ammeter be connected to the circuit?

9. What is the divergence between a voltmeter and an ammeter?

10. What common meters are used to measure out the values in a circuit?

Практическое занятие 5. Резисторы

Lesson five. Resistors

1. Read and learn the words:

capacity - емкость

power - мощность

heat - теплота, нагрев

rate - скорость, степень

to produce - производить

to modify - менять(ся)

to vary - варьировать(ся)

low - низкий

high - высокий

fixed – постоянный

any - (зд.) любой

variable - переменный

the (more than)... the (more) чем (больше) ... тем (больше)

2. Translate into Russian using чем ... тем :

1. The more one studies nature, the better i knows its laws.

2. The longer one learns, the more than ane knows.

three. The higher the atmosphere, the less is its pressure.

four. The heavier the object, the more than piece of work i has to exercise in order to elevator it.

5. The greater the number of gratis electrons in any metal, the higher is its

conductivity.

3. Interpret into Russian. Mind no.

1. There is no energy in this automobile.

2. No charges move through an open circuit.

three. No material is a perfect conductor of electricity.

four. No electrical machinery is used without protection.

5. No special material is needed in this case.

Read and translate the text.

Resistors

A resistor is one of the nearly common elements of any excursion. Resistors are used: 1. to reduce the value of current in the circuit; 2. to produce IR voltage drop and in this way to change the value of the voltage. When electric current is passing through a  resistor its temperature rises high. The college the value of electric current the higher is the temperature o f a resistor. Each resistor has a maximum temperature to which it may be heated without a trouble. If the temperature rises higher the resistor gets

open up and opens the circuit. Resistors are rated in watts. The watt is the charge per unit at which electrical energy is supplied when a current of ane ampere is passing at a potential difference of one volt. A resistor is rated every bit a I-W resistor if its resistance

equals 1,000,000 ohms and its current-carrying capacity equals I/ane,000,000 amp, since P = E x I = IR 10 I = I²R where P - ability is given in watts, R - resistance is given in ohms and I - current is given in amperes. If a resistor has a resistance of only 2 ohms but its current-carrying capacity equals 2,000 amp, information technology is rated equally a 8,000,000-W resistor. Some resistors have a constant value - these are fixed resistors, the value of other resistors may exist varied - these are variable resistors.

5. Complete the sentences using the correct variant:

i. A resistor is used

a) to measure the resistance.

b) to reduce the electric current.

c) to change the resistance.

d) to produce IR voltage drop.

ii. When current passes through a resistor

 a) its temperature drops.

b) its temperature rises.

three. Resistors are rated

a) in ohms.

b) in volts.

c) in watts.

4. Power is given

a) in amperes.

b) in watts.

5. Stock-still resistors have

a) a constant value.

b) a variable value.

vi. The value of a variable resistor

a) is fixed.

b) is varied.

7. A two-ohm resistor rated as a 8,000,000-Due west resistor

a) has a current-conveying capacity equal to ii,000 amp.

b) has a current-carrying capacity equal to 200 amp.

Pair work. Put these questions to your groupmate and let him/her answer them.

one. What is a resistor used for?

ii. When does the temperature of a resistor rise?

3. What element is used to modify the value of voltage?

four. How are resistors rated?

v. What types of resistors do yous know?

6. When does a resistor get open?

seven. What does an open resistor result in?

8. What is the divergence between a fixed resistor and a variable resistor?

9. How much is the current-carrying chapters of a 2-ohm resistor?

10. What resistors take a variable value?

Практическое занятие 6. Гальванические элементы

Lesson 6. Electric Cells

1. Read and learn the words:

Prison cell - элемент

output - емкость, мощность

bulb - электрическая лампа

to lite - зажигать, освещать

to increase - увеличиваться), возрастать

to substitute - заменять

...so on - и так далее

Read and translate the text.

Electric Cells

An electric cell is used to produce and supply electric energy. It consists of an electrolyte and two electrodes. Electrodes are used every bit terminals, they connect the cell to the circuit - current passes through the terminals and the seedling lights.

Cells can exist connected in series, in parallel and in series-parallel. In order to increase the current chapters cells should exist connected in parallel. In order to increase the voltage output cells should be connected in series. In case a battery has a large current capacity and a large voltage output, its cells are continued in serial-parallel.

When cells are connected in series the positive terminal of ane cell is connected to the negative terminal of the 2nd cell, the positive terminal of the second cell - to the negative last of the third ... and so on.

When cells are connected in parallel their negative terminals are continued together and their positive terminals are also connected. In example a jail cell has a problem information technology stops operating or operates desperately. This prison cell should be substituted by another one.

three. Consummate the sentences using the right variant:

1. A cell is used

a) to increase the voltage output.

b) to reduce the current capacity.

c) to supply electrical energy.

2. The terminals of a jail cell are used

a) to conduct current.

b) to increase voltage.

c) to connect the battery to a circuit.

three. When cells are connected in series

a) all the positive terminals are connected together.

b) all the negative terminals are connected together.

c) the positive last of one prison cell is connected to the negative terminal of the second.

4. Cells are connected in series in social club

a) to increase the current capacity.

b) to increment the voltage output.

5. In gild to increase the electric current capacity

 a) cells are connected in series,

b) cells are connected in parallel.

4. Answer the following questions:

one. What is a cell used for?

2. What does a cell consist of?

3. What is the role of the terminals?

iv. In what manner are cells connected in society to increase the voltage output?

five. In what mode are cells connected in lodge to increase the electric current capacity?

6. In what way are the terminals of series cells connected?

7. In what case does a jail cell stop operating?

viii. What should be washed in case it stops operating?

When S1 and S2 Are Open the Ammeter Reading Is 0.6 a

Source: https://studopedia.ru/22_26052_Read-and-translate-the-text.html

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