The magnetic field inside a 200 turns solenoid of radius 10 cm is 2.9*10^-4 Tesla. If the solenoid carries a current of

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🧑‍🏫 Author: Aditya Bhatt Sir   |   🕒 Last Updated: July 13, 2025

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📘Question

The magnetic field inside a 200 turns solenoid of radius 10 cm is 2.9 × 10–4 Tesla. If the solenoid carries a current of 0.29 A, then the length of the solenoid is __________                            (JEE-2025)

✅ Answer

The magnetic field inside a 200 turns solenoid of radius 10 cm is 2.9 × 10–4 Tesla. If the solenoid carries a current of 0.29 A, then the length of the solenoid is __________

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