NEET Physics Current Electricity Questions Solved

PMT - 1999

A voltmeter has a resistance of G ohms and range V volts. The value of resistance used in series to convert it into a voltmeter of range nV volts is

(1) nG

(2) $(n - 1) G$

(3) $\frac{G}{n}$

(4) $\frac{G}{(n - 1)}$

(2) Suppose resistance R is connected in series with voltmeter as shown.

By Ohm's law

$i_{g} . R = (n - 1) V$

⇒ $R = (n - 1) G$ (where $i_{g} = \frac{V}{G}$ )

Difficulty Level:

(1)
12%
(2)
62%
(3)
6%
(4)
22%

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