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Electricity
Test Description: Questions on Electricity got 8th grade.
Instructions: Answer all questions to get your test result.
1) An object becomes charged when the atoms in the object gain or lose
A
protons
B
all of the above
C
electrons
D
neutrons
2) A material through which charges can move easily is called?
A
reductor
B
conductor
C
inductor
D
insulator
3) The buildup of charges on an object is called?
A
static electricity
B
an electric force
C
an electric field
D
an electric charge
4) A material that charges can NOT move easily through is called?
A
insulator
B
inductor
C
conductor
D
reductor
5) Why does a light come on instantly when you flip on a light switch?
A
All of the above
B
An electric field sets up in the wire at nearly the speed of light.
C
Electrons move from one end of the wire to the other at the speed of light.
D
Charges flow at the speed of light.
6) All circuits include...
A
a battery, a light bulb, and a switch
B
an energy source, a resistor, and a battery
C
a battery, wires, and a switch
D
an energy source, a load, and wires
7) A circuit in which all parts are connected in a single loop is called a(n)
A
open load
B
parallel circuit
C
series circuit
D
open circuit
8) Which of the following bulbs would burn the brightest?
A
120 W
B
100 W
C
65 W
D
40 W
9) Lightening is an example of?
A
electric charge
B
eletrical induction
C
electric discharge
D
electrical conduction
10) The rate at which eletrical energy is used to do work is called?
A
electric current
B
electric power
C
static electricity
D
eletrical potential
*select an answer for all questions
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