Question

An ammeter `A` of finite resistance, and a resistor `R` are joined in series to an ideal cell `C`. A potentiometer `P` is joined in parallel to `R`. The ammeter reading is `I_(0)` and the potentiometer reading is `V_(0)`. `P` is now replaced by a voltmeter of finite resistance. The ammeter reading now is `I` and the voltmeter reading is `V`.

A. `IgtI_(0),VltV_(0)`
B. `IgtI_(0),V=V_(0)`
C. `I=I_(0),VltV_(0)`
D. `IltI_(0),V=V_(0)`

Answer 1

Correct Answer - A
Since voltmeter have finite resistance, so resistance of circuit decreases so `IgtI_(0),VltV_(0)`.