Question

Consider a circuit where a cell of emf \( E_0 \) and internal resistance \( r \) is connected across the terminal A and B as shown in the figure. The value of \( R \) for which the power generated in the circuit is maximum, is given by:

• A. \( R = r \)
• B. \( R = 2r \)
• C. \( R = 3r \)
• D. \( R = \frac{r}{3} \)

Hint:

The maximum power in a circuit occurs when the external resistance equals the internal resistance, i.e., R = r. For circuits involving both internal and external resistances, adjust accordingly for maximum power.