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Force on a Current Element

A straight wi...

Question

A straight wire carrying a current $i_{1}$ amp runs along the axis of a circular current $i_{2}$ amp. Then the force of interaction between the two current carrying conductors is?

\infty

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Zero

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\frac{μ_{0}}{4 π} \frac{2 i_{1} i_{2}}{r}

N/m

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\frac{2 i_{1} i_{2}}{r}

N/m

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Solution

The correct option is C Zero
As shown in the figure straight wire is placed parallel to the magnetic field produced by circular current. Hence force on wire $F = 0$

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