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MHT CET Physics question

PhysicsMoving Charges and MagnetismMHT CET

The earth's magnetic induction at a certain point is . This field is to be annulled by the magnetic induction at the centre of a circular conduction loop 5.00 cm in radius. The required current is nearly

Answer: (A)

Solution

\dfrac{μ_0I}{2r}\dfrac{2rB}{μ_0}\dfrac{2×0.05×7×10^{-5}}Extra open brace or missing close brace{4π\tim$

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Question ID VK-078285