A long straight wire is turned into a loop of radius 10 cm see figure If a current of 8 amperes is passed through the loop then

Question

A long straight wire is turned into a loop of radius 10 cm see figure If a current of 8 amperes is passed through the loop then the value of the magnetic field and its direction at the centre C of the loop shall be close to AMU PMT 2009 10cm C 8 ampere a 5 0 10 5 Newton amp meter upward b 3 4 10 5 Newton amp meter upward c 1 6 10 5 Newton amp meter downward d 1 6 10 5 Newton amp meter upward

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