Lesson 3: Ohm's Law

Multiple Choice

What is the unit for electric current?

• ohms

• amps

• volts

• watts

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Multiple Choice

What voltage produces a current of 100 amps with a resistance of 50 ohms?

• V=IxR

• R=V/I

• I=V/R

Multiple Choice

A 12 V battery produces a current of 6 amps. What is the resistance?

• V=IxR

• R=V/I

• I=V/R

Multiple Choice

Silver has a resistance of 0.0198 ohms. What voltage would produce a current of 250 amps?

• V=IxR

• R=V/I

• I=V/R

Multiple Choice

What is the current produced by a potential difference of 120 volts through a resistance of 0.8 ohms?

• V=IxR

• R=V/I

• I=V/R

Multiple Choice

What resistance would produce a current of 120 amps from a 6 V battery?

• V=IxR

• R=V/I

• I=V/R

Multiple Choice

A current of 310 amps is flowing through a copper wire with a resistance of 30 ohms. What is the voltage?

• V=IxR

• R=V/I

• I=V/R

Multiple Choice

A 9 V battery produces a current of 18 amps. What is the resistance?

• V=IxR

• R=V/I

• I=V/R

Multiple Choice

What resistance would produce a current of 350 amps with a potential difference of 2,500 volts?

• V=IxR

• R=V/I

• I=V/R