Electric Charges. Conductors and Insulators Practice Questions

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Electrostatics Learning Material
Tutorial IDTitleTutorialVideo
Tutorial
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Revision
Questions
14.1Electric 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.

Physics Tutorials: This image provides visual information for the physics tutorial Electric Charges. Conductors and Insulators

What is the final charge in both objects after placing them in contact?

  1. +2 C
  2. -2 C
  3. -7 C
  4. -14 C
  5. +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?

Physics Tutorials: This image provides visual information for the physics tutorial Electric Charges. Conductors and Insulators
  1. Electroscope A was positive while electroscope B was negative
  2. Electroscope A was negative while electroscope B was positive
  3. Both electroscopes were negative
  4. Both electroscopes were positive
  5. 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. 1.6 × 10-9 C
  2. 1.6 × 10-1°C
  3. 5.0 × 10-1°C
  4. 8.0 × 10-1°C

Correct Answer: D

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