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A solenoid of 1000 turns is wound over a...

A solenoid of 1000 turns is wound over a length of 40 cm. The area of cross section is `20 cm^(2)`. Around its central section, a coil of 500 turns is closely wound. If an initial current of 1 A in the solenoid is reversed in 0.3 s, find the emf induced in the coil.

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To solve the problem, we will follow these steps: ### Step 1: Identify the given values - Number of turns in the solenoid, \( N_1 = 1000 \) - Length of the solenoid, \( L = 40 \, \text{cm} = 0.4 \, \text{m} \) - Area of cross-section of the solenoid, \( A = 20 \, \text{cm}^2 = 20 \times 10^{-4} \, \text{m}^2 \) - Number of turns in the coil, \( N_2 = 500 \) - Initial current in the solenoid, \( I_1 = 1 \, \text{A} \) ...
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