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  • The number of turns of the coil of a moving coil galvanometer is increased in order to increase current sensitivity by <img alt="50 \%" src="https://entrancecorner.oncodecogs.com/gif.latex?50%20%5C

The number of turns of the coil of a moving coil galvanometer is increased in order to increase current sensitivity by 50 \%. The percentage change in voltage sensitivity of the galvanometer will be :

Option: 1

0 \%


Option: 2

75 \%


Option: 3

50 \%


Option: 4

100 \%


Answers (1)

best_answer

\alpha_{\mathrm{v}}=\frac{\mathrm{NAB}}{\mathrm{KR}} \alpha \frac{\mathrm{N}}{\mathrm{R}}
\alpha_{\mathrm{I}}=\frac{\mathrm{NAB}}{\mathrm{K}} \alpha \mathrm{N}
\mathrm{N} \uparrow, \alpha_{\mathrm{I}} \uparrow, \frac{\mathrm{N}}{\mathrm{R}} \rightarrow \text { Constant }
\Delta \alpha_{\mathrm{v}}=0

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Pankaj

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