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Interactive Games
Fun, engaging games to boost memory, math fluency, typing speed, and English skills—perfect for learners of all ages.
Typing
Memory
Math
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Knowledge
Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
What is a primary battery?
💡 Hint: Think about the batteries you throw away after use.
Question 2
Easy
Give an example of a secondary battery.
💡 Hint: Think of the batteries used in electric vehicles.
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 the primary characteristic of primary batteries?
- Rechargeable
- Single-use
- Low cost
💡 Hint: Think about batteries in devices that don't recharge.
Question 2
True or False: Lithium-Ion batteries have a memory effect.
- True
- False
💡 Hint: Consider how you charge and use a smartphone.
Solve 1 more question and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
A battery bank of six 6V, 200Ah Lead-Acid batteries is connected in series. Calculate the total voltage and capacity of the bank.
💡 Hint: What happens to voltage in series?
Question 2
A device requires 100W of power and operates for 5 hours each day. Determine the battery capacity needed to sustain this load using a 12V battery and considering a DoD of 80%.
💡 Hint: Make sure to consider the efficiency while calculating the capacity!
Challenge and get performance evaluation