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