D D A ring of thin wire with active resistance R and

Last updated: 6/25/2023

D D A ring of thin wire with active resistance R and inductance L rotates with constant angular velocity in the external uniform magnetic field perpendicular to the rotation axis In this process the flux corregnetic induction of external field across the ring varies with time as 6 40 cos at Pick the A B C For ferromagnetic Earth has a magnetic field very much geographic south pole to geographic north pole sin ot Power developed in the circuit due to rotation is given by L R The mean mechanical power developed by external forces to maintain rotation is equal to 1 w R P 2 R w L The mean power developed in the circuit is equal to P el cos where tan 2 OL R and lo is peak current The mean mechanical power developed by external forces to maintain rotation is equal ER where lo is peak current