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Ch 17
Test Description: Electrcity
Instructions: Answer all questions to get your test result.
1) Electric Field lines
A
all of the answers are correct
B
never cross one another
C
point toward a negative charge
D
point away from a positive charge
2) Electric Field lines indicate
A
both direction and relative strength
B
direction only
C
neither direction and relative strength
D
relative strength only
3) Potential differences cause
A
electrons to move from negative terminal to positive terminal
B
protons to move from positive terminal to negative terminal
C
protons to move from negative terminal to positive terminal
D
electrons to move from positive terminal to negative terminal
4) the resistance of an insulator is
A
very low
B
moderate
C
high
D
absent
5) positive charges ____________ one another
A
attract
B
repel
C
cancel
D
join
6) The electric force between two objects ___ when the distance between them decreases
A
increases
B
remains constant
C
decreases
D
none of the answers are correct
7) which of the following is a negatively charge particle
A
proton
B
coulomb
C
neutron
D
electron
8) electric field lines show strength and ___ of an electric field
A
polarization
B
friction
C
direction
D
temperature
9) _____ is the opposition posed by a material to the flow of current
A
voltage
B
charge
C
resistance
D
ampere
10) a circuit breaker acts as a switch creating a ___ circuit when the current is too high
A
closed
B
series
C
parallel
D
open
*select an answer for all questions
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