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Magnetic Moment

The magnetic ...

Question

The magnetic induction at centre O in the following figure will be:-

A

\frac{μ_{0} i α}{4 π} (\frac{1}{r_{2}} - \frac{1}{r_{2}}) ⊙

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B

\frac{μ_{0} i α}{4 π} (\frac{1}{r_{2}} + \frac{1}{r_{2}}) ⊙

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C

\frac{μ_{0} i α}{2 π} (\frac{1}{r_{2}} - \frac{1}{r_{2}}) \otimes

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D

\frac{μ_{0} i α}{2 π} (\frac{1}{r_{2}} + \frac{1}{r_{2}}) \otimes

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Solution

The correct option is A $\frac{μ_{0} i α}{4 π} (\frac{1}{r_{2}} - \frac{1}{r_{2}}) ⊙$
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