Mean radius of a toroid carrying current of 2A is 30/`pi` cm. Total number of turns in toroid is 600. A paramagnetic substance is used to prepare a ring to make the core of toroid and its temperature is kept at 300 K. If intensity of magnetization in the core is `6.0 xx 10^(-2)` A/m. Find the magnetic susceptibility of the material at 300 K. How the intensity of magnetization will change when temperature of core is changed to 450 K?

Explanation

To solve the problem step by step, we will follow the given data and apply the relevant formulas.

### Given Data:
- Mean radius of the toroid, \( R = \frac{30}{\pi} \) cm = \( \frac{30}{100} \) m = \( 0.3 \) m
- Current, \( I = 2 \) A
- Total number of turns, \( N = 600 \)
- Intensity of magnetization, \( I = 6.0 \times 10^{-2} \) A/m
- Temperature, \( T = 300 \) K
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