A flux of 10 - 3 Wb passes through a strip having an area A = 0.02 m 2 . The plane of the strip is at an angle of 60 ° to the direction of a uniform field B . The value of B is

Question

A flux of 10 - 3 Wb passes through a strip having an area A = 0.02 m 2 . The plane of the strip is at an angle of 60 ° to the direction of a uniform field B . The value of B is, 0.1 T, 0.058 T, 4.0 mT, none of the above

MARKS App · Accepted Answer

As the angle between field and plane is 60 o , therefore angle between area vector and magnetic field is, θ = 30 o Magnetic flux through the strip is ϕ = B A cos ⁡ θ 1 0 - 3 = B 0.02 cos ⁡ 3 0 o B = 1 0 - 3 0.02 3 2 B = 0.058 T

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