Current Electricity Charging Discharging Of Capacitors Question 250
Question: In a potentiometer experiment, the galvanometer shows no deflection when a cell is connected across 60 cm of the potentiometer wire. If the cell is shunted by a resistance of $ 6,\Omega $ , the balance is obtained across 50 cm of the wire. The internal resistance of the cell is
[SCRA 1994]
Options:
A) $ 0.5,\Omega $
B) $ 0.6,\Omega $
C) $ 1.2,\Omega $
D) $ 1.5,\Omega $
Show Answer
Answer:
Correct Answer: C
Solution:
$ r=\frac{(l _{1}-l _{2})}{l _{2}}\times R’=( \frac{60-50}{50} )\times 6=1.2,\Omega $
BETA
