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Assertion: When radius of circular loop ...

Assertion: When radius of circular loop carrying current is doubled, its magnetic moment becomes four times.
Rrason: Magnetic moment depends on area of the loop.

A

If both Assertain and Reason are true and Reason is the correct explanation of Assertain

B

If both Assertain and Reason are true but Reason is not correct explantion of Assertain

C

If Assertion is true but Reason is false

D

If Assertion is false but Reason in true.

Text Solution

Verified by Experts

The correct Answer is:
A
Magnetic moment of circular loop, M=NIA
Where, `A=pir^(2) " " "when" r^(')=2r`
`" " M'=NI(2pir)^(2)=4M`
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