A battery of emf and internal resistance is connected to a resistor. The current in the circuit is . The terminal voltage of the battery when the circuit is closed is?
Step 1: Given Data
EMF of the battery
The internal resistance of the battery
The current in the circuit
Let the resistance of the resistor be .
Let the terminal voltage be .
Step 2: Formula Used
Step 3: Calculate the Resistance
By Ohm’s law, we know that
Upon substituting the values we get,
Step 4: Calculate the Terminal Voltage
According to Ohm's law, we get,
Hence, the required terminal voltage is .