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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/mB. 0.6 N/mC. 0.8 N/mD. 0.10 N/m

Answer» Correct Answer - 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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