Physics · 2022
JEE Main · 25 June 2022, Shift 2 · Q41
A long solenoid carrying a current produces a magnetic field B along its axis. If the current is doubled and the number of turns per cm is halved,…
A long solenoid carrying a current produces a magnetic field $\displaystyle B$ along its axis. If the current is doubled and the number of turns per cm is halved, the new value of magnetic field will be equal to
Official answer
(1)
B
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JEE Main 2022 Physics question, with the answer from NTA’s final answer key. Where our answers come from.