Apoint charge Q is moving in a circular orbit of radius Rin the x-y plane with an angular velocity . This can beconsidered as equivalent to a loop carrying a steady current Auniform magnetic field along the positiv 22-27atis is now switched on, which increases at a constant rate from 0 to B in one second. Assume that the radiusof the orbit remains constant. The application of the magnetic field induces an emf in the orbit. The induced erfis defined as the work done by an induced electric field in moving a unit positive charge around a dosed loop. Itis known that for an orbiting charge, the magnetic dipole moment is proportional to the angular momentumn witha proportionality constant[IIT-JEE 2013]The change in the magnetic dipole moment associated with the orbit, at the end of the time interval of themagnetic field change isBORBOR(A) -YBOR(C)-(D) yBQR?The magnitude of the induced electric field in the orbit at any instant of time during the time interval of themagnetic field change is