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  • A voltmeter of  resistance 1000 is connected across a resistance 500<img alt="\Omega" src="http://entranc

A voltmeter of  resistance 1000\Omega is connected across a resistance 500\Omega in a given circuit.What will be the reading of voltmeter?

Option: 1

4


Option: 2

2


Option: 3

6


Option: 4

1


Answers (1)

best_answer

 R_{eq}=\frac{1000*500}{1500}+500

          =500+\frac{1000}{3}=\frac{2500}{3}\Omega

I=\frac{10}{\left ( \frac{2500}{3} \right )}A= \frac{3}{250}A

Potential Difference across Voltmeter

V=IR

I_v=\left ( \frac{3}{250} \right ).\frac{R_2}{R_1+R_2}= \left ( \frac{3}{250} \right )*\frac{500}{1500}

I_v=\frac{1}{250}A

Potential Difference=\frac{1}{250}*1000V= 4V

 

Posted by

avinash.dongre

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