Lesson: Relating emf, Current, Internal Resistance, and Terminal Voltage

In this lesson, we will learn how to calculate the current produced by voltage sources with internal resistance when connected to external resistances.

Sample Question Videos

01:28

Worksheet: 10 Questions • 1 Video

Q1:

What is the internal resistance of a voltage source if its terminal potential drops by 2.00 V when the current supplied increases by 5.00 A?

Q2:

What is the total current in the toy?

How much power is supplied to the load?

What is the internal resistance of the dry cell if it goes bad, resulting in only 0.500 W being supplied to the load?

Q3:

What is the current through the external resistor, which has a resistance of 10.00 ohms?

What is the terminal voltage of each battery?

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