Two circular coils are made from a uniform wire the ratio of radii of circular coils are 2.3 & no. of turns is 3:4. If they are connected in parallel across a battery.
A.: Find ratio of magnetic induction at their centres.
B: Find the ratio magnetic moments of 2 coils

Explanation

To solve the problem, we need to find the ratio of magnetic induction at the centers of two circular coils and the ratio of their magnetic moments. Let's break it down step by step.

### Given Data:
- Ratio of radii of the coils \( r_1 : r_2 = 2.3 : 3 \)
- Ratio of number of turns \( n_1 : n_2 = 3 : 4 \)

### Part A: Find the ratio of magnetic induction at their centers.

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