Introduction to Physical Science

Chapter 20: Electricity

Self-Check Quiz-Eng.

1.
Electrical current is measured in __________.
A)volts
B)ohms
C)amperes
D)watts
2.
Voltage measures __________.
A)the current
B)the resistance
C)the power from a circuit
D)the energy electrons have
3.
What flows in an electric circuit?
A)protons
B)neutrons
C)electrons
D)ions
4.
Why do batteries run down?
A)there are too many electrons
B)the electrons in the chemicals are used up
C)there are too many protons
D)the protons are all gone
5.
Why do wires with a current running through them get hot?
A)because resistance causes heat
B)because voltage causes heat
C)because current causes heat
D)because electrons cause heat
6.
A long, thin wire has __________ than a short, thick wire.
A)lesser resistance
B)greater resistance
C)greater voltage
D)lesser voltage
7.
As voltage increases, what happens to current?
A)It decreases.
B)It increases.
C)It stays the same.
D)It fluctuates randomly.
8.
As resistance increases, what happens to current?
A)It increases.
B)It decreases.
C)It stays the same.
D)It fluctuates randomly.
9.
What do you feel when you receive an electric shock?
A)voltage
B)resistance
C)current
D)power
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