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Electrical Circuits
Test Description: How do circuits work?
Instructions: Answer all questions to get your test result.
1) 1. All of the following are objects that use electrical circuits except. . .
A
D. an iron
B
C. a bicycle
C
A. a flashlight
D
B. a radio
2) 2. Christmas lights are on a series circuit. The electricity has one pathway to flow. When one bulb burns out, the rest of the lights will. . .
A
B. go out
B
A. stay on
C
D. none of the above
D
C. explode
3) 3. Which of the following could most likely be used to fix a broken circuit?
A
B. rubber erasers
B
A. cotton yarn
C
D. metal paperclips
D
C. glass marbles
4) 4. Which of the following is the best reason why electricians use gloves when working on power lines?
A
A. to keep their hands warm
B
C. to get a better grip on tools
C
B. to protect them from electrical shock
D
D. none of the above
5) 5. In order for an electrical circuit to work properly, the circuit must. . .
A
C. be open
B
D. only have 1 light bulb
C
B. be incomplete
D
A. be complete
6) 6. Which of the following is the best conductor of electricity?
A
C. cotton string
B
D. rubber snake
C
A. glass stick
D
B. copper wire
7) 7. Electricity in a circuit can produce all the following EXCEPT. . .
A
B. Heat
B
A. Light
C
D. Solar energy
D
C. Sound
8) 8. A parallel circuit has more than one pathway for electricity to flow. If one light bulb goes out in a parallel circuit, what happens to the rest of the lights?
A
C. all the lights will explode
B
A. they will all go out
C
D. none of the above
D
B. they will stay on
9) 9. Which of the following is the best electrical insulator?
A
B. metal paper clip
B
C. rubber eraser
C
D. water
D
A. copper wire
10) 10. Which of the following best explains the difference between a conductor and an insulator?
A
D. Conductors and insulators both allow electricity to pass through
B
C. Conductors and insulators both block the flow of electricity
C
B. insulators block the flow of electricity and conductors allow the flow of electricity
D
A. Conductors block the flow of electricity and insulators allow the flow of electricity
*select an answer for all questions
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