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Current, Resistance, and Power Quiz

Total questions: 15

Worksheet time: 1hrs 15mins

Name
Class
Date
1.

A 3A current flows through a television. How long would it take for 1500C to flow through it?

a)

4500s

b)

500s

c)

50s

d)

450s

2.

How much charge flows through a wire in 80s if the current is a constant 5.4A?

a)

432C

b)

360C

c)

524C

d)

344C

3.

What is the resistance if the voltage is 10V and the current is 2A?

a)

20 Ω

b)

5 Ω

c)

12 Ω

d)

8 Ω

4.

What is the resistance if the current is 2A and the voltage is 10V?

a)

8 Ω

b)

20 Ω

c)

12 Ω

d)

5 Ω

5.

A potential difference of 24 V is applied to a 150 resistor. How much current flows through the resistor?

a)

0.15 A

b)

3600 A

c)

6.25 A

d)

0.16 A

6.

What potential difference is required across an 8.0-Ω resistor to cause 2.0 A to flow through it?

a)

4.0 V

b)

16 V

c)

8.0 V

d)

32 V

7.

The voltage supplied to a circuit is 17 V and the current running through is 10 A. What is the power generated?

a)

170 W

b)

170 A

c)

1.7 V

d)

1.7 W

8.
What is the current flowing into a microwave oven that requires 700 W of power if the voltage difference is 120 V?
a)
4.3A
b)
6.3 A
c)
5.83 A
d)
none
9.
A heating element resistance is 24 ohms. The current measures 10 Amps. What is the power?
a)
240 watts
b)
1,200 watts
c)
1,000 watts
d)
2,400 watts
10.

Calculate the POWER supplied by a 12A current flowing through a 20Ω resistor.

a)

4800

b)

2880

c)

2000

11.
What is the voltage difference in a circuit that uses 2420 W of power if 11 A of current flows into the circuit?
a)
220 v
b)
0.004 v
c)
2431 v
d)
532400 v
12.
The current in an appliance is 3 A and the voltage difference is 120 V. How much power is being supplied to the appliance?
a)
10000 w
b)
220 w
c)
420 w
d)
360 w
13.

There is a current of 2.0A in a resistor for 30 s.


The potential difference (p.d.) across the resistor is 12V.


How much energy is transferred in the resistor?

a)

1.25 J

b)

5.0 J

c)

180 J

d)

720 J

14.

What is the potential difference across a 10 ohm resistor if the current in the resistor is 3.0 A?

a)

0.3 V

b)

3 V

c)

30 V

d)

15 V

15.

A battery supplies a 0.015 A current to a small radio. How long should the radio stay on so that 4.80 C passes through each of the following parts of the circuit through the battery

a)

300 s

b)

310 s

c)

320 s

d)

330 s