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Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
What is electromotive force?
💡 Hint: Think of it like the battery's push without any load.
Question 2
Easy
What does internal resistance in a cell affect?
💡 Hint: Consider how circuits behave when loads are applied.
Practice 4 more questions and get performance evaluation
Interactive Quizzes
Engage in quick quizzes to reinforce what you've learned and check your comprehension.
Question 1
What is internal resistance?
- Resistance to current flow in external circuits
- Resistance within a cell
- A type of circuit element
💡 Hint: Think about where the resistance is located in relation to the battery.
Question 2
If the emf of a cell is 10V and the current flowing is 5A with an internal resistance of 1 ohm, what is the terminal voltage?
💡 Hint: Use the formula for terminal voltage.
Solve and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
An electrolytic cell has an emf of 15V and internal resistance of 4 ohms. Calculate the maximum current that can be drawn and the terminal voltage across a 10-ohm load when 2A is flowing.
💡 Hint: Break the problem into two parts: calculate I_max, then use the terminal voltage formula.
Question 2
Discuss a scenario where measuring internal resistance is critical for a battery pack used in an electric vehicle.
💡 Hint: Consider how this could affect the vehicle's power delivery.
Challenge and get performance evaluation