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Electricity
Test Description: Electricity chapter test review.
Instructions: Answer all questions to get your test result.
1) The buildup of charges on an object is called
A
negative charge
B
static electricity
C
positive charge
D
static discharge
2) According to Ohm's Law, resistance is equal to voltage divide by _____.
A
time
B
conduction
C
potential
D
current
3) A complete, unbroken path through which electric charges can flow is a(n)
A
magnetic field line
B
electric circuit
C
electrical resistance
D
magnetic pole
4) Materials through which charge can flow easily are called
A
conductors
B
magnets
C
insulators
D
resistors
5) An example of an insulator is
A
silver
B
rubber
C
iron
D
copper
6) The ampere is a unit of
A
magnetism
B
temperature
C
electric charge
D
electric current
7) Atoms contain charged particles called
A
protons and electrons
B
protons, neutrons, and electrons
C
electrons and neutrons
D
protons and neutrons
8) A region around a charged object where the object's electric force is exerted on another charged object is an electric ____.
A
power plant
B
field
C
socket
D
outlet
9) Charges can redistribute themselves by friction, conduction, polarization and
A
reduction
B
production
C
induction
D
superconduction
10) The unit of measure for voltage is
A
ampere
B
volt
C
joule
D
ohm
11) All electrical devices contain electric
A
motors
B
circuits
C
acid
D
gears
12) Which of the following does not determine the resistance of a wire?
A
diameter
B
temperature
C
color
D
length
13) When more branches are added to a parallel circuit,
A
the current has fewer paths to follow
B
resistance increases
C
the current has more paths to follow
D
resistance decreases
14) Batteries and power plants are examples of
A
energy conduction
B
energy transformation
C
energy sources
D
energy conservation
15) The path of a current in a circuit is completed by
A
a transformer
B
an electrical device
C
conduction wires
D
an energy source
16) Electrons in conductors move about ______ freely than the electrons in insulators
A
more
B
less
17) The strength of the electric field of a charged particle becomes greater as the distance from particle
A
decreases
B
increases
18) The law of ___________________ of charges states that charges are not created or destroyed
A
conduction
B
conservation
C
induction
D
matter
19) Most objects have ______ overall charge.
A
a lot
B
no
C
some
20) ___________ a switch breaks an electric device.
A
Closing
B
Doing nothing to
C
Opening
*select an answer for all questions
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