Question

Drive expression for relation between internal resistance and terminal potential

Answer 1

Answer:

The internal resistance r of a voltage source affects the output voltage when a current flows. The voltage output of a device is called its terminal voltage V and is given by V = emf − Ir, where I is the electric current and is positive when flowing away from the positive terminal of the voltage source.

Answer 2

Answer:

The terminal potential difference represented as V is defined as the potential difference developed between the positive and negative terminals of the cell when current flows through the circuit. V = V+ + V- – Ir. This is the voltage drop accomplished due to the internal resistance. ... ε = IR + Ir.