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Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
What unit is used to measure resistance?
💡 Hint: Think about the scientist whose name the unit is based on.
Question 2
Easy
If a circuit has a voltage of 10 volts and a current of 2 Amperes, what is its resistance?
💡 Hint: Use Ohm's Law, V = I × R.
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 resistance measure?
- Flow of current
- Opposition to current flow
- Voltage level
💡 Hint: Focus on what slows down the flow in circuits.
Question 2
True or False: Ohm's Law states that resistance is inversely proportional to voltage.
- True
- False
💡 Hint: Revisit the formula V = I × R.
Solve 1 more question and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
Calculate the resistance of a 3 m long copper wire with a cross-sectional area of 1.5 mm². The resistivity of copper is 1.68 x 10^-8 Ω·m.
💡 Hint: Don’t forget to convert mm² to m² first!
Question 2
Explain how you would design a circuit to ensure it doesn't overload when powering multiple devices with different resistances.
💡 Hint: Think about how resistances add in series and the current division rule in parallel.
Challenge and get performance evaluation