MHT CET 2023 Physics question
The magnetic field at a point P situated at perpendicular distance 'R' from a long straight wire carrying a current of 12 A is 3 x 10⁻⁵ Wb/m². The value of 'R' is mm is [ x 10⁻⁷ Wb/Am]
Answer: (D)
Solution
Field of a long straight wire: . So \frac{μ_0 I}{2π B}\frac{4π×10^{-7}× 12}{2π×3×10^{-5}}$ =
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