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A current of I amperes is flowing throug...

A current of I amperes is flowing through each of the bent wires as shown. Find the magnitude of magnetic field at O.

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`B(theta)= (mu_0I)/(4piR)theta,,B_("net")=(mu_0I)/(4pi)[(pi//2)/(R) + (3pi//2)/(R^l)] = (mu_0I)/(8)[1/R + 3/(R^l)]`
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