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Two long parallel wires carry currents o...

Two long parallel wires carry currents of equal magnitude but in opposite directions. These wires are suspended from rod PQ by four chords of same length L as shown in Fig The mass per unit length of the wires is `lambda`. Determine the value of `theta` assuming it to be small.

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The correct Answer is:
`[sqrt(mu_(0)I^(2)l 4pi lambda gl)]`
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