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A current of 5 ampere is flowing in a wi...

A current of 5 ampere is flowing in a wire of length 1.5 metres. A force of `7.5 N` acts on it when it is placed in a uniform magnetic field of 2 Tesla. The angle between the magnetic field and the direction of the current is

A

`60^(@)`

B

`90^(@)`

C

`30^(@)`

D

`45^(@)`

Text Solution

Verified by Experts

The correct Answer is:
C
As, Bil ` sin theta = F `
`2 xx 5 xx 1.5 sin theta = 7.5`
`rArr" " sin theta = (7.5)/(2 xx 5 xx 1.5) = (1)/(2) = sin 30^(@)`
`rArr " " theta = 30^(@)`
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