Question
Question: In an experiment according to set up, when E<sub>1</sub> = 12 volt and internal resistance zero, E =...
In an experiment according to set up, when E1 = 12 volt and internal resistance zero, E = 2 volt. The galvanometer reads zero, then X would be-
A
200
B
500
C
100
D
10
Answer
100
Explanation
Solution
Voltage across X is 2V
So 
X = 2
⇒ 
X = 2
⇒ 12 X = 1000 + 2X
⇒ 10X = 1000 X = 100Ω