B3 P1 and P2 quiz

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

• ampere, A-C

• ampere, D-C

• ohm, A-C

• ohm, D-C

Pictures which show how current and voltage change over a period of time are called

• time/volt curves

• time/current curves

• waveforms

• graphs

The most common A-C waveform is the

• sine wave

• cosine wave

• square wave

• hertz wave

One complete sine wave is called one

• alternation

• rotation

• variation

• cycle

Frequency in cycles per second is called

• kilocycles

• hertz

• amplitude

• pulses

The number of poles and the speed at which an alternator is operated determine what aspect of the generated voltage?

• Period

• Amplitude

• Frequency

• Peak

The time required to complete one cycle or 1/f of an A-C sine wave is called the

• period

• amplitude

• frequency

• peak

The heating effect method is the basis for establishing what value of an alternating current?

• D-C

• Average

• Instantaneous

• Effective

The effective value of A-C voltage and current is also known as what value?

• RMS

• IMS

• Equivalent

• Average

The three fundamental laws applied to electric circuits are Ohm’s Law,

• Boyle’s Law and Dalton’s Law

• Kirchhoff’s Law and Dalton’s Law

• Lenz’s Law and Boyle’s Law

• Kirchhoff’s Law and Lenz’s Law