Physics · 2025
JEE Main · 23 January 2025, Shift 1 · Q38
Consider a moving coil galvanomenter (MCG): A. The torsional constant in moving coil galvanometer has dimentions [ ML^2 T^-2 ] B. Increasing the…
Consider a moving coil galvanomenter (MCG):
A. The torsional constant in moving coil galvanometer has dimentions [ $\displaystyle \mathrm{ML}^2 \mathrm{~T}^{-2}$ ]
B. Increasing the current sensitivity may not necessarily increase the voltage sensitivity.
C. If we increase number of turns (N) to its double (2N), then the voltage sensitivity doubles.
D. MCG can be converted into an ammeter by introducing a shunt resistance of large value in parallel with galvanometer.
E. Current sensitivity of MCG depends inversely on number of turns of coil.
Choose the correct answer from the options given below:
Official answer
From NTA’s final answer key for this paper.
(4)
A, B Only
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JEE Main 2025 Physics question, with the answer from NTA’s final answer key. Where our answers come from.