A flux of 1 mWb 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 1 mWb 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 m T, none of the above.

MARKS App · Accepted Answer

We know that, ϕ = BAcos ⁡ θ Angle between A → and B → is 30 ° . ϕ = 1 × 10 - 3 Wb A = 0 .02 m 2 ⇒ 10 - 3 = B × 2 × 10 - 2 × cos ⁡ 30 o ⇒ B = 0 .058 T

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