Physics · 2024
JEE Main · 31 January 2024, Shift 1 · Q43
A coil is places perpendicular to a magnetic field of 5000 T. When the field is changed to 3000 T in 2 s, an induced emf of 22 V is produced in the…
A coil is places perpendicular to a magnetic field of $\displaystyle 5000$ T . When the field is changed to $\displaystyle 3000$ T in $\displaystyle 2$ s , an induced emf of $\displaystyle 22$ V is produced in the coil. If the diameter of the coil is $\displaystyle 0.02$ m , then the number of turns in the coil is:
Official answer
From NTA’s final answer key for this paper.
(4)
$\displaystyle 70$
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JEE Main 2024 Physics question, with the answer from NTA’s final answer key. Where our answers come from.