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```
in the experiment of caliberation of voltmeter a sandard cellof emf 1.1 volt is balanced against 440 cm of potentiometer wire. the potential difference across the ends of resistance is found to balance against 220 cm ofthe wire the corresponding reading of voltmeter is 0.5 vot.the error in the reading of voltmeter will be
in the experiment of caliberation of voltmeter a sandard cellof emf 1.1 volt is balanced against 440 cm of potentiometer wire. the potential difference across the ends of resistance is found to balance against 220 cm ofthe wire the corresponding reading of voltmeter is 0.5 vot.the error in the reading of voltmeter will be

```
9 months ago

Arun
25768 Points
```							If we have to find out the error of voltmeter if the same is showing 0.5V, then answer is D. Potential per unit length = 1.1/440=0.0025V/cm For length l=220 cm, voltmeter reading =0.0025x220=0.55V Error=0.5-0.55 =-0.05V
```
9 months ago
Vikas TU
14149 Points
```							Dear student E = 1.1 v L = 440 cm l= 220cm k = E/L k = 0.0025 Vm^-1Vr = 0.0025 * 220 Vr = 0.55Voltmeter shows 0.5 v 0.5-Vr = 0.5-0.55 = -0.05
```
9 months ago
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### Course Features

• 110 Video Lectures
• Revision Notes
• Test paper with Video Solution
• Mind Map
• Study Planner
• NCERT Solutions
• Discussion Forum
• Previous Year Exam Questions