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Worksheets

Circuits

Total questions: 15

Worksheet time: 2hrs 46mins

Name
Class
Date
1.
What is a switch's function in a circuit?
a)
to make the current hotter or colder
b)
turn on and off the flow of current
c)
the pathway that current flows
d)
to add more power to the circuit
2.
This circuit has more than one loop. When one light goes out, the others stay on. 
a)
closed circuit
b)
series circuit
c)
parallel circuit
d)
open circuit
3.
When there is only one path for electrons to move through it is called a _____. When one light goes out, they all go out. 
a)
closed circuit
b)
parallel circuit
c)
series circuit
d)
open circuit
4.

If a current of 5.00 A passes through the motor of a refrigerator when it is plugged into a wall socket (120 V), what is the resistance of the refrigerator?

a)

24 ohms

b)

600 ohms

c)

0.0417 ohms

d)

125 ohms

5.

A clothes dryer is connected to a 230 V source of electrical potential. If it has a resistance of 9.2 Ohms. Calculate the current it draws.

a)

25 A

b)

1.1 x 106 A

c)

0.04 A

d)

22 A

6.

What potential difference is required to produce a current of 8.0 A in a load having a resistance of 64 Ohms.

a)

8 V

b)

512 V

c)

56 V

d)

4 V

7.

Determine the total resistance

a)

1600 ohms

b)

1000 ohms

c)

601 ohms

d)

650 ohms

8.

Determine the total resistance

a)

943 ohms

b)

513 ohms

c)

780 ohms

d)

2710 ohms

9.

Determine the total resistance.

a)

694 ohms

b)

5600 ohms

c)

565 ohms

d)

14,500 ohms

e)

none of these are correct

10.

Determine the total resistance

a)

986 ohms

b)

6080 ohms

c)

594 ohms

d)

5940 ohms

11.

Determine the current across R3.

a)

0.3 A

b)

300 A

c)

0.003 A

d)

9 mA

12.

Determine the total current

a)

9 A

b)

0.015 mA

c)

9 mA

d)

15.15 mA

13.

Determine the voltage across R1.

a)

2.65 V

b)

9 V

c)

5.6 V

d)

3 V

14.

A circuit has an applied voltage of 100 volts and a current of 350 mA. What is the resistance in the circuit?

a)

30 kΩ

b)

0.286 Ω

c)

285.7 Ω

d)

0.48 Ω

15.

If the resistance in a circuit is 3.6 kΩ and the current is measured at 23 mA, calculate Voltage.

a)

30.8 V

b)

0.308 mV

c)

82.8 V

d)

30.8 kV

e)

None of these are correct