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Magnetic Field

In the given ...

Question

In the given figure MN and OP are semi-infinite wires and segment NO is a semi-ring. The magnetic field at C is (in T)

A

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B

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C

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D

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Solution

The correct option is C

$We have B_{M N} = 0 B_{N O} = \frac{μ_{0} i}{4 R} \otimes B_{O P} = \frac{μ_{0} i}{4 π R} \otimes B = B_{M N} + B_{N O} + B_{O P} = \frac{μ_{0} i}{4 π R} (π + 1) \otimes$

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