Question

The coils A and B having radii in the ratio 1:2 carrying currents in the ratio 5:1 and have the number of turns in the ratio 1:5 .the ratio of magnetic inductions at their centres

Answer 1

Answer:

B=

2r

nμ

0

i

Bα

r

ni

B

2

B

1

=

n

2

i

2

r

1

n

1

i

1

⋅r

2

=(

5

1

)(

1

5

)(

1

2

)

=2:1