Current Electricity Ques 37
- A battery of internal resistance $4$ $ \Omega$ is connected to the network of resistances as shown in figure. In order that the maximum power can be delivered to the network, the value of $R$ in $\Omega$ should be
(1995, 2M)
(a) $\frac{4}{9}$
$2$
(c) $\frac{8}{3}$
(d) $18$
Show Answer
Answer:
Correct Answer: 37.(b)
Solution:
Formula:
- The given circuit is a balanced Wheatstone’s bridge.
Thus, no current will flow across $R$ of the side $C D$. The given circuit will now be equivalent to
For maximum power, net external resistance should be equal to the internal resistance
$=$ Total internal resistance or $=$
BETA
