3_3 Electrical Terminology

If a photon radiating into an electronic device causes the production of an electron/hole pair, the device is known as a.

• light emitting diode.

• laser diode.

• photodiode.

Faraday's Law States that.

• the magnitude of the EMF is indirectly proportional to the rate of change of flux.

• the magnitude of the EMF is directly proportional to the magnetic flux.

• the magnitude of the EMF is directly proportional to the rate of change of flux.

Which of the following is 1 Amp?.

• 1000 mA.

• 1000 kA.

• 1000 μA.

The term that describes the combined resistive forces in an AC circuit is.

• resistance.

• total resistance.

• impedance.

Ohm's law states that:.

• e.m.f. = current divided by resistance.

• current = e.m.f. divided by resistance.

• resistance = current divided by e.m.f.

E.M.F. in an electric circuit corresponds to what in a magnetic circuit.

• MMF.

• reluctance.

• flux.

In conventional current flow, what is Fleming's right hand rule used for?.

• Generators.

• Motors.

• Inductors.

The SI unit of work is.

• Kilogram metres-force.

• Joules per metre.

• Joules per second (Watts).

A coulomb is.

• one ampere * second.

• one second per ampere.

• one ampere per second.

An electric current is a flow of.

• electrons from a positively charged area to a negatively charged area.

• electrons from a negatively charged area to a positively charged area.

• protons from a positively charged area to a negatively charged area.