Question

Why magnetic field at the centre of a circular loop is zero?

Answer 1

The magnetic field of center of circle is zero because whole circle will have magnetic field so middle part becomes zero. If more over if it has magnetic field then that may not be in set place, it moves hear and there so to be constant there will be zero in circular loop. It will be not so hard while removing because middle part doesn't have magnetic filed.The physics thermo is about this.