Ohm's Law and Circuits

What is the unit for power?

• Ampere

• Ohm

• Volt

• Watt

What is the unit for potential difference?

• Ohm

• Volt

• Watt

• Ampere

What is the unit for current?

• Ampere

• Watt

• Volt

• Ohm

What is the unit for energy?

• Watt

• Joule

• Volt

• Ohm

What is the unit for resistance?

• Watt

• Joule

• Ohm

• Volt

12. An overhead wire has a potential difference of 30,000 volts. If the current flowing through the wire is 1,000 amperes, what is the resistance of the wire?

• 0.033 ohms

• 30 ohms

• 3.0 x 10^7 ohms

• 3.0 x 10^8 ohms

If the potential difference is 12 volts and the resistance is 5 ohms, what is the current?

• 2.4 A

• 60 A

• 0.417 A

• 17 A

A hair dryer draws 14.0 amps from a 120 volt circuit. How much power did the hair dryer use?

• .1167 Watt

• 8.57 Watt

• 1,680 Watt

• 840 Watt

Tags

NGSS.HS-PS3-1

The following type of circuit has the same voltage throughout the entire circuit.

• series

• parallel

The following type of circuit has the current travelling in only one continuous pathway.

• series

• parallel