Published by:
CGP EDU Academic Team
Published on: August 13, 2026
A voltmeter with internal resistance of 
can be used to measure upto 20 V . In order to increase its measuring range to 30 V , the required modification is to 
.
A
connect resistor of 
, in series with voltmeter.
, in series with voltmeter. B
connect resistor of 
, in parallel to voltmeter.
, in parallel to voltmeter. C
connect resistor of 
, in series with voltmeter.
, in series with voltmeter. D
connect resistor of 
, in parallel to voltmeter.
, in parallel to voltmeter.
Text Solution
Verified by ExpertsThe correct answer is:
A
Since maximum current through voltmeter remains same
So, 
This extra resistance must be connected in series.
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