A battery of emf and internal resistance is connected across a resistor of .
PHYSICS · Multi-part · CBSE · Physics · Current Electricity · Current Electricity
Problem
A battery of emf 6.0V and internal resistance 0.5Ω is connected across a resistor of 11.5Ω.
(i) Calculate the current supplied by the battery.
(ii) Determine the power dissipated inside the battery.
(iii) Find the percentage efficiency of the battery in delivering power to the external resistor.
(iv) If the external resistor is replaced by one of 5.5Ω, repeat parts (i) to (iii). Comment on how the efficiency changes with load resistance.