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Worksheets

Series Circuits

Total questions: 20

Worksheet time: 16mins

Name
Class
Date
1.

In a series circuit the applied voltage is equal to:

a)

The sum of the resistance times the current

b)

The sum of the resistance divided by the current

c)

The difference of the voltage drops across each resistor

d)

The sum of the resistance times the current squared

2.

In a series circuit the applied voltage is equal to:

a)

The sum of the resistance times the current

b)

The sum of the resistance divided by the current

c)

The difference of the voltage drops across each resistor

d)

The sum of the resistance times the current squared

3.

The current in a series circuit is:

a)

Equal to the sum of the currents in each component

b)

Measured with a galvanometer

c)

Proportional to the total resistance of the circuit

d)

The same in all parts of the circuit

4.

The current in a series circuit is:

a)

Equal to the sum of the currents in each component

b)

Measured with a galvanometer

c)

Proportional to the total resistance of the circuit

d)

The same in all parts of the circuit

5.

Connecting resistors in series produces the same effect as increasing the:

a)

Supply voltage

b)

Cross-sectional area of resistance wire

c)

Length of resistance wire

d)

Supply current

6.

Connecting resistors in series produces the same effect as increasing the:

a)

Supply voltage

b)

Cross-sectional area of resistance wire

c)

Length of resistance wire

d)

Supply current

7.

Three 10Ω resistors are connected in series to a 60V supply. If the centre resistor open circuits, the current will be:

a)

0A

b)

2A

c)

3A

d)

6A

8.

Three 10Ω resistors are connected in series to a 60V supply. If the centre resistor open circuits, the current will be:

a)

0A

b)

2A

c)

3A

d)

6A

9.

The current in a series circuit, consisting of three resistors of equal resistance, is 12 amps. If two resistors are short circuited, the current will then be:

a)

36 Amps

b)

4 Amps

c)

12 Amps

d)

0 Amps

10.

The current in a series circuit, consisting of three resistors of equal resistance, is 12 amps. If two resistors are short circuited, the current will then be:

a)

36 Amps

b)

4 Amps

c)

12 Amps

d)

0 Amps

11.

The voltage drop across each resistor in a series circuit is:

a)

Equal to the product of current squared and resistance

b)

Proportional to the conductance of each resistor

c)

Inversely proportional to the supply voltage

d)

Proportional to the resistance of each resistor

12.

The voltage drop across each resistor in a series circuit is:

a)

Equal to the product of current squared and resistance

b)

Proportional to the conductance of each resistor

c)

Inversely proportional to the supply voltage

d)

Proportional to the resistance of each resistor

13.

Current in a series circuit containing two resistances is:

a)

Common in all parts of the circuit

b)

The sum of all the branch currents

c)

The sum of all the voltage drops divided by one resistor

d)

One value of resistance divided into the applied voltage

14.

Current in a series circuit containing two resistances is:

 

a)

Common in all parts of the circuit

b)

The sum of all the branch currents

c)

The sum of all the voltage drops divided by one resistor

d)

One value of resistance divided into the applied voltage

15.

Two resistors A and B are connected in series to a 200V supply. If resistor B has three times the resistance of A, the voltage drop across resistor B is:

a)

200V

b)

50V

c)

150V

d)

167V

16.

Two resistors A and B are connected in series to a 200V supply. If resistor B has three times the resistance of A, the voltage drop across resistor B is:

a)

200V

b)

50V

c)

150V

d)

167V

17.

When five lamps are connected in series to the supply, and the third lamp burns out:

a)

Lamps one and two go out but four and five stay on

b)

All lamps except the third remain on

c)

All lamps go out

d)

The fuse blows

18.

When five lamps are connected in series to the supply, and the third lamp burns out:

a)

Lamps one and two go out but four and five stay on

b)

All lamps except the third remain on

c)

All lamps go out

d)

The fuse blows

19.

Three resistors of 3Ω, 6Ω and 43Ω are connected in series and a current of 130mA flows. What is the supply voltage?

a)

400V

b)

6.76V

c)

20V

d)

2.5V

20.

Three resistors of 3Ω, 6Ω and 43Ω are connected in series and a current of 130mA flows. What is the supply voltage?

a)

400V

b)

6.76V

c)

20V

d)

2.5V