Indiana Science Grade 8

Chapter 10: Electricity

Section 3 Self-Check Quiz-Eng.

1.
What variable does Ohm's law NOT describe?
A)current
B)power
C)resistance
D)voltage
2.
What kind of circuit has only one path for current flow?
A)parallel
B)voltage
C)series
D)conducting
3.
What kind of circuit has more than one path for current flow?
A)series
B)voltage
C)conducting
D)parallel
4.
When devices are added to a series circuit, what happens to the current?
A)It decreases.
B)It increases.
C)It stays the same.
D)It fluctuates randomly.
5.
What is the equation to calculate electrical power?
A)P = I x V
B)I = V/W
C)P = I/V
D)I = V x W
6.
How much energy is needed to run a 50-W lightbulb for 5 hours?
A)0.25 kWh
B)250 kWh
C)10 kWh
D)0.01 kWh
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