Physics - Magnetism Question with Solution | TestHub

$B_X$and$B_Y$are the magnetic field at the centre of two coils of two coils$X$and$Y$respectively, each carrying equal current. If coil$X$has$200$turns and$20 \mathrm{cm}$radius and coil$Y$has$400$turns and$20 \mathrm{cm}$radius, the ratio of$B_X$and$B_Y$is