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In the adjacent shown circuit, a voltmeter of internal resistance  when connected across  and  reads  Neglecting the internal resistance of the battery, the value of  is

a)

b)

c)

d)


Question ID - 150428 :-

In the adjacent shown circuit, a voltmeter of internal resistance  when connected across  and  reads  Neglecting the internal resistance of the battery, the value of  is

a)

b)

c)

d)

1 Answer
5876 Votes
3537

Answer Key : (c) -

(c)

Internal resistance of voltmeter is

Therefore effective resistance across  and

 is given by

According to ohm’s law

   …(ii)

Now, total resistance of circuit

Now,

 

 



Next Question :

A resistor  dissipates power  when connected to a certain generator. If the resistor  is put in series with  the power dissipated by

a)

Decreases

b)

Increases

c)

Remains the same

d)

Any of the above depending upon the relative values of  and


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