Current Electricity Charging Discharging Of Capacitors Question 698
Question: In the network shown below, the ring has zero resistance. The equivalent resistance between the point A and B is
Options:
2R
4R
7R
10R
Show Answer
Answer:
Correct Answer: A
Solution:
As the ring has no resistance, the three resistances of R each are in parallel. $ \Rightarrow \frac{1}{R’}=\frac{1}{3R}+\frac{1}{3R}+\frac{1}{3R}=\frac{1}{R}\Rightarrow R’=R $ $ \
Therefore $ The equivalent resistance between point A and B $ =R+R=2R. $
BETA
