Hw does the strength of the magnetic field atathe center of a circular coil of a wire depends on 1)the radius of the coil 2)the no. of turns of wire in the coil 3)the srength of current flowing in the coil?

1.magnetic field  inversely proportional 2 radius 

2.and directly proportional to no. of turns

3.directly proportional to the srength of current flowing in the coil

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1) current is inversely proportional to radius2) no of curves is directly proportional to resistance3) depends upon the resistance of the wire

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