1. The emf and the internal resistance of a battery are shown in the figure. If a current of 8.3 A is drawn from the battery when a resistor R is connected across the terminals ab of the battery. What is the power dissipated by the resistor R?
2. The emf and the internal resistance of a battery are shown in the figure. When the terminal voltage V_ ab is equal to 17.4V, what is the current through the battery, including its direction?
