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Question: Answered & Verified by Expert
If the distance between two current carrying parallel wire is made $\left(\frac{1}{3}\right)^{r d}$ then the magnitude of the force between them (the same current is passing through both wires)
PhysicsMagnetic Effects of CurrentMHT CETMHT CET 2022 (10 Aug Shift 1)
Options:
  • A is tripled.
  • B becomes 6 times.
  • C becomes q times.
  • D remains same.
Solution:
2537 Upvotes Verified Answer
The correct answer is: is tripled.
Force between wires is inversely proportional to the separation between them,
$F \propto \frac{1}{d}$
Therefore, if the separation between wires becomes $\left(\frac{1}{3}\right)^{r d}$, the magnitude of force is tripled.

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