Question

A battery of emf 12 V and internal resistance 3 ohms is connected to a resistor. if current In the circuit is 0.5A
1) calculate the resistance of the resistor
2) calculate the terminal voltage of the battery when the circuit is closed.​

Answer 1

Answer:

a. 21 ohm

b. Terminal voltage = 12 - 1.5 = 10.5 V