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Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
What is the total emf of two 1.5V batteries connected in series?
๐ก Hint: Add the voltages together.
Question 2
Easy
What happens to internal resistance when cells are connected in series?
๐ก Hint: Think about how many resistances there are.
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 happens to the effective emf when cells are connected in series?
- It stays the same
- It adds up
- It decreases
๐ก Hint: Think about summing the voltages of each cell.
Question 2
True or False: Internal resistance decreases when cells are connected in parallel.
- True
- False
๐ก Hint: Consider how cells share the current flow.
Solve 1 more question and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
You have two batteries in series, one with 6V and 2ฮฉ resistance and another with 3V and 1ฮฉ. What is the total voltage and resistance if used in a circuit?
๐ก Hint: Add voltages directly for total voltage.
Question 2
Three identical batteries with an emf of 12V and internal resistance of 4ฮฉ each are connected in parallel. Calculate the effective emf and total internal resistance.
๐ก Hint: Use the formula for parallel to find the total resistance.
Challenge and get performance evaluation