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Electric Charges. Conductors and Insulators Practice Questions
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| Tutorial ID | Title | Tutorial | Video Tutorial | Revision Notes | Revision Questions | |
|---|---|---|---|---|---|---|
| 14.1 | Electric Charges. Conductors and Insulators |
Physics Revision Questions for Electric Charges. Conductors and Insulators
1) Two identical objects are charged with the values shown in the figure.
What is the final charge in both objects after placing them in contact?
- +2 C
- -2 C
- -7 C
- -14 C
- +14 C
Correct Answer: C
2) When a negatively charged object touches the leaves of a charged electroscope A, the leaves close, while when the same object is brought near another charged electroscope B, the leaves open more. What were the original charges of electroscopes A and B?
- Electroscope A was positive while electroscope B was negative
- Electroscope A was negative while electroscope B was positive
- Both electroscopes were negative
- Both electroscopes were positive
- Electroscope A was negative while electroscope B was neutral
Correct Answer: A
3) A charged object contains 5.0 billion free electrons. What is its electric charge in Coulombs?
- 1.6 × 10-9 C
- 1.6 × 10-1°C
- 5.0 × 10-1°C
- 8.0 × 10-1°C
Correct Answer: D
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- Continuing learning electrostatics - read our next physics tutorial: Coulomb's Law
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