A circular coil of 100 turns and radius 2 cm is placed in a uniform magnetic field of strength` 0.1` T. Current flowing through the coil is 10 A. Coil is held in an orientation that it experiences maximum possible torque. By what angle should the plane of the coil be rotated that torque acting on it becomes half of this maximum value ?

Explanation

To solve the problem step by step, we will follow the principles of torque in a magnetic field and the relationship between the angle and torque.

### Step 1: Understand the Given Information
We have the following data:
- Number of turns (N) = 100
- Radius of the coil (r) = 2 cm = 0.02 m
- Magnetic field strength (B) = 0.1 T
- Current (I) = 10 A
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