(Answered) Current i 389 ma is set up in a loop having two radial

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Current i = 38.9 mA is set up in a loop having two radial lengths and two semicircles of radii a = 7.06 cm and b = 17.2 cm with a common center P. What are the (a) magnitude of the magnetic field at P and (b) magnitude of the loop's magnetic dipole moment?

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