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