Current Electricity Charging Discharging Of Capacitors Question 228
Question: AB is a wire of uniform resistance. The galvanometer G shows no current when the length AC = 20cm and CB = 80 cm. The resistance R is equal to
[MP PMT 1995; RPET 2001]
Options:
A) $ 2,\Omega $
B) $ 8,\Omega $
C) $ 20,\Omega $
D) $ 40,\Omega $
Show Answer
Answer:
Correct Answer: C
Solution:
By Wheatstone bridge, $ \frac{R}{80}=\frac{AC}{BC}=\frac{20}{80} $
Therefore $ R=20,\Omega $
BETA
