physical science chap 6
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
