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What is the magnitude of magnetic force ...

What is the magnitude of magnetic force per unit length on a wire carrying a current of 8A and making an angle of `30^(@)` with the direction of a uniform magnetic field of 0.15 T ?

Text Solution

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`I=8 A, theta=30^(@), B=0.15 T, l=1 m`
The magnitude of magnetic force
`f=I(lxxB)=I l B sin theta`
`=8xx1xx0.15xx sin 30^(@)`
`=(8xx0.15)/(2)=4xx0.15=0.6 N//m`
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