Ch 17 Question Preview (ID: 6255)


Electricity. TEACHERS: click here for quick copy question ID numbers.

There is a repulsive force between two charged objects when
a) their charges are of unlike sign
b) they have the same number of protons
c) their charges are of like sign
d) they have the same number of electrons

Batteries typically have
a) two positive terminals
b) two negative terminals
c) one positive and one negative terminal
d) no terminals

there is an attractive force between two charge objects when
a) their charges are of unlike sign
b) they have the same number of protons
c) their charges are of like sign
d) they have the same number of electrons

when there is an equal amount of positive and negative charges on an object, the object is
a) positively charged
b) negatively charged
c) neutral
d) supercharged

Potential difference is measured in
a) amperes
b) volts
c) coulombs
d) joules

current is the rate at which charges move through a
a) conductor
b) insulator
c) voltage
d) joule

What happens to the resistance of a super conductor when its temperature drops belwo the critical temperature
a) resistance increases
b) resistance doubles
c) resistance drops to zero
d) resistance is reduced by half

what happens to the overal resistance of a circuit when too many appliances are connected across a 120V outlet
a) resistance increases
b) resistance stays the same
c) resistance is decreased
d) resistance is zero

a material that allows electric charges to move easily
a) insulator
b) conductor
c) coulomb
d) switch

a circuit in which two are more paths are connected to the voltage source
a) parallel circuit
b) series circuit
c) circuit breaker
d) circuit city

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