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Assertion: When radius of circular loop carrying current is doubled, its magnetic moment becomes four times. Reason : magnetic moment depends on area of the loop. |
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Answer» If both assertion and reason are true and reason is the correct explanation of assertion. Explanation : Magnetic moment M = IA = I `(pi R^(2))` NEW magnetic moment M 1 = I `pi` (2r) 2 = 4 `pi` I r 2 = 4 M |
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