Electricty and Magnetism Unit Quiz

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

• 2000 V

• 5000 V

• 1000 V

• 2500 V

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

• 1 ohm

• 2 ohms

• 0.5 ohms

• 4 ohms

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

• 4.95 V

• 5.5 V

• 4.75 V

• 5 V

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

• 150 amps

• 100 amps

• 200 amps

• 90 amps

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

• 0.05 ohms

• 0.1 ohms

• 0.02 ohms

• 0.5 ohms

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

• 9300 V

• 6200 V

• 8700 V

• 9500 V

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

• 0.5 ohms

• 0.05 ohms

• 0.2 ohms

• 0.1 ohms

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

• 7.14 ohms

• 8.5 ohms

• 6.25 ohms

• 7.5 ohms

For current to flow, the circuit must be:

• Closed

• Open

• Short-circuited

• Overloaded

______ law relates voltage, current, and resistance.

• Ohm’s

• Coulomb’s

• Newton’s

• Kirchhoff’s