Circuits

Conventional current is the flow of

• positive charge

• negative charge

Current is

• the same in all circuit elements in a series circuit.

• the rate of flow of charge.

• is measured in amperes.

• All of the above are true.

The variable used for current is

• C

• A

• I

• V

Batteries produce

• direct current (DC) and alternating current (AC).

• AC only.

• DC only.

The current coming of the wall outlet is

• direct current (DC).

• alternating current (AC).

If you need 3.0 V and you have two 1.5 V batteries

• wire them in series.

• wire them in parallel.

Electrical resistance is measured in

• amperes (A)

• coulombs (C)

• volts (V)

• Ω (ohms)

Why are household circuits wired in parallel?

• All devices need to consume the same amount of power.

• All devices need the same amount of current.

• All devices need to operate independently of each other.

• All devices need the same amount of resistance.

Why is a short circuit dangerous?

• No resistance means high voltage.

• No resistance means low voltage.

• No resistance means high current.

• No resistance means low current.

A fuse mill melt or a circuit breaker will trip when

• the current is too small.

• the resistance is too large.

• the voltage is too large.

• the current is too large.