Hint: The magnetic field due to all 8 long straight wires at the center is zero. Evaluate the magnetic field due to remaing current carrying arcs using integration or using the formula for magnetic field at the center of current carrying loop and multiplying it by a factor of 3*45/2pi.
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Lokesh Sharma
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4 years, 3 months ago

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TopNewestHint: The magnetic field due to all 8 long straight wires at the center is zero. Evaluate the magnetic field due to remaing current carrying arcs using integration or using the formula for magnetic field at the center of current carrying loop and multiplying it by a factor of 3*45/2pi. – Lokesh Sharma · 4 years, 3 months ago

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– Sayan Chowdhury · 4 years, 3 months ago

ok thanxx, i got it..:)Log in to reply