Question
Question: A battery of e.m.f. 10 V and internal resistance 0.5 ohm is connected across a variable resistance R...
A battery of e.m.f. 10 V and internal resistance 0.5 ohm is connected across a variable resistance R. The value of R for which the power delivered in it is maximum is given by
A
2.0 ohm
B
0.25 ohm
C
1.0 ohm
D
0.5 ohm
Answer
0.5 ohm
Explanation
Solution
For maximum power r = R