OHM'S LAW QUIZ

Approximately how many milliamperes of current flow through a circuit with a 40 V source and 6.8 k of resistance?

27.2 mA

590 mA

59 mA

5.9 mA

TRUE ANSWER : ?
YOUR ANSWER : ?

An electric heater draws 3.5 A from a 110 V source. The resistance of the heating element is approximately

385

31

38.5

3.1

TRUE ANSWER : ?
YOUR ANSWER : ?

Four amperes of current are measured through a 24 resistor connected across a voltage source. How much voltage does the source produce?

96 V

8 V

960 V

9.6 V

TRUE ANSWER : ?
YOUR ANSWER : ?

The formula to find I when the values of V and R are known is

I = V/R

I = R/V

I = VR

V = IR

TRUE ANSWER : ?
YOUR ANSWER : ?

A resistance of 3.3 M is connected across a 500 V source. The resulting current is approximately

151 µA

660 mA

66 mA

15.1 µA

TRUE ANSWER : ?
YOUR ANSWER : ?

What is the approximate resistance setting of a rheostat in which 650 mA of current flows with a 150 V source?

97

230

23

9.7

TRUE ANSWER : ?
YOUR ANSWER : ?

How much resistance is required to limit the current from a 12 V battery to 3.6 mA?

22 k

3.3 k

2.2 k

33 k

TRUE ANSWER : ?
YOUR ANSWER : ?

How much resistance is needed to draw 17.6 mA from a 12 volt source?

68

212

680

6.8 k

TRUE ANSWER : ?
YOUR ANSWER : ?

If 24 V are applied across a resistor and there are 10.9 mA of current, the resistance is

220 k

22 k

2.2 k

220

TRUE ANSWER : ?
YOUR ANSWER : ?

The current through a flashlight bulb is 40 mA and the total battery voltage is 4.5 V. The resistance of the bulb is approximately

18

11.2

112

1.2

TRUE ANSWER : ?
YOUR ANSWER : ?

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