Current Electricity Ques 10
- The effective resistance between points $P$ and $Q$ of the electrical circuit shown in the figure is
(2002, 2M)
(a) $\frac{2 R r}{R+r}$
(b) $\frac{8 R(R+r)}{3 R+r}$
(c) $2 r+4 R$
(d) $\frac{5 R}{2}+2 r$
Show Answer
Answer:
Correct Answer: 10.(a)
Solution:
Formula:
- The circuit can be redrawn as follows :
BETA
