Two concentric coils of 10 turns each are placed in the same plane. Their radii are 20 cm and
Channel: Doubtnut
Date: 2021-11-08

Two concentric coils of 10 turns each are placed in the same plane. Their radii are 20 cm and 40 cm and carry 0.2 A and 0.3 A current respectively in opposite directions. The magnetic induction (in tesla) at the centre is