MHT CET 2026 Physics question
A long solenoid carrying a current produces a magnetic field 'B' along its axis. If the currunt is tripled and the number of turns per cm is halved then new value of magnetic field will be
Answer: (C)
Solution
The field inside a long solenoid is , where is the number of turns per unit length. With and : \frac{n}{2}$· 3I =
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