Assertion : Consider two identical charges placed distance 2d apa… - Vidyadip

MCQ

Assertion : Consider two identical charges placed distance $2d$ apart, along $x-$ axis. The equilibrium of a positive test charge placed at the point $O$ midway between them is stable for displacements along the $x-$ axis.

Reason: Force on test charge is zero

A
If both Assertion and Reason are correct and Reason is the correct explanation of Assertion.
✓
If both Assertion and Reason are correct, but Reason is not the correct explanation of Assertion.
C
If Assertion is correct but Reason is incorrect.
D
If both the Assertion and Reason are incorrect.

✓

Answer

Correct option: B.

If both Assertion and Reason are correct, but Reason is not the correct explanation of Assertion.

b
If $+ve$ charge is displaced along $x-$ axis, then net force will always act in a direction opposite to that of displacement and the test charge will always come back to its original position.

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