Transcript Powell_Quiz - Powell

ELECTRICITY KNOWLEDGE
QUIZ
Multiple Choice
1. Which of the following would not give you a shock?
A. hitting power lines with a
kite
C. staying away from power
lines
B. sticking a fork into an
electrical outlet
D. dropping a radio into a
bathtub
2. Which of these would be the best conductor of electricity?
A. air
C. saltwater
B. space
D. glass
3. How does alternating current (AC) differ from direct
current (DC)?
A. AC alternates from a
positive to a negative
charge.
B. AC alternates from high
voltage to low voltage.
C. AC changes the direction
of its current.
D. They are different names
for the same thing.
4. Which of these scientists invented electricity?
A. Thomas Edison
C. Allesandro Volta
B. Benjamin Franklin
D. None of the above
5. Why are people with heart trouble often shocked with
electricity?
A. It startles them, much like
curing hiccups.
B. Their body is low on
electric current, and they
need a boost.
C. A powerful charge is
required to overcome the
resistance of the muscles.
D. Electric shock briefly
stops the heart, allowing
muscles to regain rhythm.
6. What function does a circuit serve in your home?
A. It protects your home
against lightning strikes.
C. It provides a complete
path through which
electricity can flow.
B. It increases the voltage
from the power lines
outside your house.
D. It provides a barrier
against electromagnetic
radiation.
7. What is the difference between a series circuit and a
parallel circuit?
A. A series circuit has one
path; the parallel circuit
splits into branches.
B. A series circuit must have
a fuse.
C. A parallel circuit must
have a circuit breaker.
D. A parallel circuit has one
path, the series circuit
splits into branches.
8. How does a basic switch work?
A. The switch changes
polarity, which
determines the current’s
direction.
C. The switch opens the
circuit, allowing current to
flow.
B. The switch closes the
circuit, which turns off
the current.
D. Two conductors move
together and apart to
control the current’s flow.
9. Which of the following is not an example of static
electricity at work?
A. getting a shock after
walking across a rug on a
dry day
C. a magnet picking up iron
filings
B. toner in a photocopier
being attracted to paper
D. a bolt of lightning striking
the Earth
10. When batteries are placed in a flashlight, the positive
terminal of one is connected to the negative terminal of the next.
Why?
A. So electricity can flow from
one to the next.
C. So the voltage is decreased
as it enters the next battery.
B. So the current is slowed as
it enters the next battery.
D. So the electromagnetic
interference is reduced.