Magnetic field due to currentEasy
Question
A circular coil of radius 20 cm and 20 turns of wire is mounted vertically with its plane in magnetic meridian. A small magnetic needle is placed at the centre of the coil and it is deflected through 45o, when a current is passed through the coil. When horizontal component of earth′s field is 0.34 × 10-4 T, the current in coil is :-
Options
A.0.6 A
B.6 A
C.6 × 10-3 A
D.0.06A
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