What is the magnitude of magnetic force ...

What is the magnitude of magnetic force per unit length on a wire carrying a current of 8 A and making an angle of `30^(@)` with the direction of a uniform magnetic field of 0.20 T ?

A

0.4 N/m

B

0.6 N/m

C

0.8 N/m

D

0.10 N/m

Text Solution

Verified by Experts

The correct Answer is:

C

`vecF=I vecl xx vecB`
`F= I l B sin theta `
`(F)/( l) = 8 xx (0.2) sin 30^(@) = 0.8 N//m`

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