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Ch 17
Test Description: Electricity
Instructions: Answer all questions to get your test result.
1) There is a repulsive force between two charged objects when
A
their charges are of like sign
B
they have the same number of electrons
C
they have the same number of protons
D
their charges are of unlike sign
2) Batteries typically have
A
one positive and one negative terminal
B
no terminals
C
two positive terminals
D
two negative terminals
3) there is an attractive force between two charge objects when
A
their charges are of unlike sign
B
they have the same number of electrons
C
their charges are of like sign
D
they have the same number of protons
4) when there is an equal amount of positive and negative charges on an object, the object is
A
neutral
B
positively charged
C
negatively charged
D
supercharged
5) Potential difference is measured in
A
coulombs
B
joules
C
volts
D
amperes
6) current is the rate at which charges move through a
A
insulator
B
joule
C
voltage
D
conductor
7) What happens to the resistance of a super conductor when its temperature drops belwo the critical temperature
A
resistance doubles
B
resistance is reduced by half
C
resistance increases
D
resistance drops to zero
8) what happens to the overal resistance of a circuit when too many appliances are connected across a 120V outlet
A
resistance stays the same
B
resistance is decreased
C
resistance increases
D
resistance is zero
9) a material that allows electric charges to move easily
A
insulator
B
conductor
C
coulomb
D
switch
10) a circuit in which two are more paths are connected to the voltage source
A
circuit breaker
B
parallel circuit
C
circuit city
D
series circuit
*select an answer for all questions
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