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QNEET-2024-Ph-58: NEET 2024 Physics - Class 12 NEET-2024-Ph-58 Solution: A tightly wound 100 turns coil of radius 10 cm carries a…
A tightly wound 100 turns coil of radius 10 cm carries a current of 7 A. The magnitude of the magnetic field at the centre of the coil is (Take permeability of free space as ): 44 mT 4.4 T 4.4 mT 44 T
Multiple Choice Options
- A 44 mT
- B 4.4 T
- C 4.4 mT
- D 44 T
Step-by-Step Verified Solution
The magnitude of magnetic field due to circular coil of N turns is given by
B C = _ 0 i N 2 R = 4 � _ 10 _ 7 _ 7 _ 100 2 _ 0.1 = 4.4 _ 10 _ 3 T = 4.4 mT