Magnetism I | Magnetic Field At Center of Current Carrying Circular Loop All the best! 1. Two similar coils of radius R are lying concentrically with their planes at right angles to each other. The current flowing in them are I and 2I respectively. The resultant magnetic field induction at the center will be- √5μoI / 2R 3μoI / 2R μoI / 2R μoI / R None 2. Two insulated concentric coils, each of radius R, placed at right angles to each other, carry currents I and √3I respectively. The magnitude of the net magnetic field at their common center will be- (A) μoI / R (B) μoI / 2R (C) μoI / 4R (D) 2μoI / R Option (A) Option (B) Option (C) Option (D) None 3. Two concentric and coplanar circular loops P and Q have their radii in the ratio 2 : 3. Loop Q carries a current of 9 A in the anti-clockwise direction. For the magnetic field to be zero at the common center, loop P must carry- 3 A in clockwise direction 9 A in clockwise direction 6 A in anti-clockwise direction 6 A in clockwise direction None 1 out of 3 Time's up
