A battery of emf 20 V and internal resistance $2 \Omega$ is connected to a resistor, if the current in the circuit is 1 A, find the terminal voltage of the battery. |
5 V 10 V 12 V 18 V |
18 V |
The correct answer is Option (4) → 18 V The terminal voltage $(V_{terminal})$ is - $V_{terminal}=ε-I.r$ $=20V-(1A.2Ω)$ $=18V$ |