physical science chap 6

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The resistance of a wire depends on the

length of the wire, cross-sectional area of the wire, temperature of the wire.

If you multiply amp ανδ α ohm, the answers will be in units of

potential

Which of the following unit is actually a measure of a rate?

amp

The rate of flow of electric charge is measured in

amperes

An electric current is measured in units of

amps

What is it that travels through an electric circuit at nearly the speed of light?

an electric field

The unit of electric charge is called a(n)

coulomb

An object becomes positively charged by gaining protons.

false

An electric current is a(n)

flow of charge

An electric field

is always present around an electron.

A magnetic field

is produced by moving charges.

Ohm's law states

that the current in a circuit increases if the potential difference increases.

The attractive force between two unlike charges has the same strength as the repulsive force between two like charges.

true

The volt is a measure of the difference in electrical potential energy between two points.

true

The unit of electric potential difference between two points is a(n)

volt

Electric power is measured in units of

watts


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