MHT CET 2025 Physics question
An element is placed at the origin and carries a current of 10A. The magnitude of magnetic field on the Y axis at a distance of 0.5 m if (sin 90° = 1)
Answer: (C)
Solution
By the Biot-Savart law, . The point lies on the Y axis, perpendicular to the element (along X), so and . Taking the element length as cm m (the value in the standard version of this problem; it is not
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