A Beka: Physics Quiz 37

An increase in temperature increases the resistivity of a conductor.

true

The current of a circuit in series is the same throughout the circuit.

true

Which of the following equations represents Ohm's law?

V=IR

Ohmic conductors vary in their resistance as voltage changes.

false

The imaginary flow of positive charge is called electron current.

false

What type of materials form a barrier to the flow of charge?

insulators

The resistance of a conductor is proportional to what two physical characteristics (separated by a comma)? length,area

length, area OR cross-sectional area

What is the name for any device that uses a charge's energy to do some type of work?

load

What unit is used to measure the resistance of a conductor?

ohm

What type of materials have intermediate values of resistivity?

semiconductors