TS EAMCET Medical 11 May 2023 Shift 2 Paper

Two wires of same material and same length 20‌cm are wound in the form of two coils A and B. The coil A has 4 turns and the coil B has 2 turns. If same current is sent into the two coils, the ratio of magnetic induction at the centres of the two coils A and B is