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A circular coil of radius r having numbe...

A circular coil of radius r having number of turns n and carrying a current A produces magnetic induction at its centre of magnitude B. B can be doubled by

A

keeping the number of turns n and changing the current to A/2

B

changing the number of turns to n / 2 and keeping the current at A

C

simultaneously changing the number of turns and current to 2n and 2A

D

keeping the current at A and changing the number of turns to 2n.

Text Solution

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The correct Answer is:
D
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AAKASH SERIES-MOVING CHARGES AND MAGNETISM-EXERCISE-IA
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  11. A current loop consists of two identical semicircular parts each of ra...

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