Lesson: Electromotive Force and Internal ResistancePhysics
In this lesson, we will learn how to relate the electromotive force (emf) of a battery to its terminal voltage and its internal resistance.
Sample Question Videos
A battery has an electromotive force of 2.50 V. The terminal voltage of the battery is 2.42 V when it is connected to a circuit and there is a current of 435 mA in the circuit. What is the internal resistance of the battery? Give your answer to three decimal places.
Which of the following statements is a correct description of the terminal voltage of a battery?
Which of the following statements is a correct description of the lost voltage of a battery?