Circuits Review

The unit of electric charge is the:

• ohm

• ampere

• volt

• coulomb

An object with equal numbers of positive and negative charges is:

• positively charged

• negatively charged

• neutral

• statically charged

A tiny imbalance of charge on an object is called:

• inductive

• static

• contact

• charged

Lightning occurs when negative charge in the clouds:

• flows to the positively charged ground

• flows to the negatively charged ground

• flows to other clouds

• causes thunder to sound

A circuit with a break or a switch in the OFF position is called:

• closed circuit

• short circuit

• resistor circuit

• open circuit

A closed circuit is one that:

• is off

• is on

• has a break

• requires no voltage

A device that pushes current through a circuit using chemical energy is called a:

• voltmeter

• battery

• ammeter

• switch

What kind of material conducts electricity poorly?

• conductor

• insulator

• semiconductor

• resistor

A water tower and pump is a good analogy for:

• battery

• wire

• resistor

• switch

If a 120-volt appliance has a resistance of 240 ohms, how much current does it use?

• 2 amps

• 2 volts

• 0.5 amps

• 60 volts