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A metallic wire having length of 2 m and...

A metallic wire having length of 2 m and weight of `4xx10^(-3)` N is found to remain at rest in a uniform and transverse magnetic field of `2xx10^(-4) T`. Current flowing through the wire is :

A

`10 A `

B

`5 A `

C

`2 A`

D

`1 A`

Text Solution

Verified by Experts

The correct Answer is:
A
`F = ilBl`
` i = ( F)/( Bl )`
`= ( 4 xx 10 ^(-3))/( 2 xx 10 ^(-4) xx 2) = 10 A`
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