Statement 1: A potentiometer of longer length is used for accurate measurement.Statement 2: The potential gradient for a potentiometer of longer length with a given source of e.m.f. becomes small.

# Statement 1: A potentiometer of longer length is used for accurate measurement.Statement 2: The potential gradient for a potentiometer of longer length with a given source of e.m.f. becomes small.

1. A

Both statements 1 and 2 are correct

2. B

Statement 1 is correct statement 2 is incorrect

3. C

Statement 1 is incorrect statement 2 is correct

4. D

Both statements 1 and 2 are incorrect

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### Solution:

$\mathrm{Sensitivity}\text{\hspace{0.17em}\hspace{0.17em}}\propto \text{\hspace{0.17em}\hspace{0.17em}}\frac{1}{\mathrm{Potential}\text{\hspace{0.17em}\hspace{0.17em}}\mathrm{gradient}}\text{\hspace{0.17em}\hspace{0.17em}}\propto \text{\hspace{0.17em}\hspace{0.17em}\hspace{0.17em}}\left(\mathrm{Length}\text{\hspace{0.17em}\hspace{0.17em}}\mathrm{of}\text{\hspace{0.17em}\hspace{0.17em}}\mathrm{wire}\right)$  Register to Get Free Mock Test and Study Material

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