A) 2R
B) R/2
C) 3R
D) 4R
Correct Answer: A
Solution :
If R is the resistance of the voltmeter and current is flowing through it, then \[V=IR\] or \[R=\frac{V}{I}\] If now resistance connected in series is R', the \[R+R'=\frac{3V}{I}\] \[R+R'=3R\] \[R'=2R\]You need to login to perform this action.
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