B3 P1 Flash - Electrical Current Concept s

Front

Direct current in an electrical circuit is measured by a given number of _______ passing any point in one second.

Back

ELECTRONS

Front

If a coulomb of electrons moves past a point in a circuit in one second and all the electrons move in the same direction, there is one _______ of current flow.

Back

AMPERE

Front

If one-half a coulomb of electrons moves in one direction past a point in the first half-second, then reverses direction and moves past the same point in the next half-second, one ampere of _______ current is flowing.

Back

ALTERNATING

Front

Pictures that show how current and voltage change over a period of time are called _______.

Back

WAVEFORMS

Front

Waveforms for direct current are _______ lines.

Back

STRAIGHT

Front

The A-C waveform drawn below is called a _______ wave.

Back

SINE

Front

One complete sine wave represents one complete _______.

Back

CYCLE

Front

The number of cycles per second is called

Back

Frequency

Front

The accepted international term for cycles per second (CPS) or frequency is

Back

Hertz

Front

The number of poles and the speed at which an alternator is operated determine the _______ of a generated voltage.

Back

Frequency