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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 discharge
C
static electricity
D
positive charge
2) According to Ohm's Law, resistance is equal to voltage divide by _____.
A
current
B
conduction
C
time
D
potential
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
insulators
C
magnets
D
resistors
5) An example of an insulator is
A
rubber
B
silver
C
copper
D
iron
6) The ampere is a unit of
A
temperature
B
electric current
C
electric charge
D
magnetism
7) Atoms contain charged particles called
A
protons and neutrons
B
electrons and neutrons
C
protons, neutrons, and electrons
D
protons and electrons
8) A region around a charged object where the object's electric force is exerted on another charged object is an electric ____.
A
field
B
outlet
C
socket
D
power plant
9) Charges can redistribute themselves by friction, conduction, polarization and
A
superconduction
B
production
C
reduction
D
induction
10) The unit of measure for voltage is
A
joule
B
ampere
C
ohm
D
volt
11) All electrical devices contain electric
A
gears
B
acid
C
circuits
D
motors
12) Which of the following does not determine the resistance of a wire?
A
temperature
B
color
C
length
D
diameter
13) When more branches are added to a parallel circuit,
A
the current has more paths to follow
B
the current has fewer paths to follow
C
resistance decreases
D
resistance increases
14) Batteries and power plants are examples of
A
energy sources
B
energy conservation
C
energy conduction
D
energy transformation
15) The path of a current in a circuit is completed by
A
an electrical device
B
conduction wires
C
a transformer
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
increases
B
decreases
18) The law of ___________________ of charges states that charges are not created or destroyed
A
matter
B
induction
C
conduction
D
conservation
19) Most objects have ______ overall charge.
A
some
B
a lot
C
no
20) ___________ a switch breaks an electric device.
A
Doing nothing to
B
Opening
C
Closing
*select an answer for all questions
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