Question

7.
The ratio of magnetic field due to arc 'abc' and
arc'adc' will be
I al​

Answer 1

Answer:

$\frac{b1}{b2} = \frac{i1}{i2} \times \frac{ \alpha 1}{ \alpha 2}$

Explanation:

$b \: proportional \: to \: i \times \alpha \\ therefore \\ \frac{b1}{b2} = \frac{i1}{i2} \times \frac{ \alpha 1}{ \alpha 2}$