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Fun, engaging games to boost memory, math fluency, typing speed, and English skills—perfect for learners of all ages.
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Knowledge
Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
What is the formula for Ohm's Law?
💡 Hint: Think about how voltage, current, and resistance relate to each other.
Question 2
Easy
List two components that are essential for building a simple circuit.
💡 Hint: Consider what is needed to power the circuit and provide light.
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 does Ohm's Law state?
- Resistance equals voltage divided by current.
- Resistance equals current multiplied by voltage.
- Voltage equals current divided by resistance.
💡 Hint: Remember the relationship expressed in V = I * R.
Question 2
True or False: An electromagnet can only lift very small objects.
- True
- False
💡 Hint: Think about industrial electromagnets used in scrap yards.
Solve and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
Design an electromagnet that can lift at least 15 paper clips. Explain the factors in your design and how they affect the strength.
💡 Hint: Consider how each design choice impacts the magnetic field.
Question 2
Given a circuit with three resistors in series (2Ω, 5Ω, 10Ω) powered by a 20V battery, calculate the current flowing through the circuit.
💡 Hint: Use Ohm's Law to find the current after calculating total resistance.
Challenge and get performance evaluation