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According to Coulomb's Law, if the physical distance ($r$) between two stationary point charges is instantly doubled, the electrostatic force between them will:
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Decrease to exactly one-fourth ($1/4$) of its original value
Decrease to exactly one-half ($1/2$) of its original value
Remain completely unchanged regardless of distance
Increase by a factor of exactly four ($4$)
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Explanation
The electrostatic force obeys an inverse-square law ($F \propto 1/r^2$). Doubling the distance yields $(1/2)^2 = 1/4$.…
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Concept Behind This Question
This question focuses on the concept of Electrostatics under the broader topic of Electromagnetism.
Related key concepts: Physics.
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Question Details
- Subject:
- Physics
- Topic:
- Electromagnetism
- Subtopic:
- Electrostatics
- Difficulty:
- medium
- Source:
- Past Papers
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