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Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
What is the effect of increasing the cross-sectional area of a wire on the current it can carry?
π‘ Hint: Think about how a larger pipe carries more water.
Question 2
Easy
What unit is used to measure resistance?
π‘ Hint: It's named after a famous scientist.
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 resistance when the cross-sectional area of a wire increases?
- Resistance increases
- Resistance decreases
- Resistance stays the same
π‘ Hint: Think about how it could affect water flow in a pipe.
Question 2
True or False: The thicker a wire, the more current it can carry without overheating.
- True
- False
π‘ Hint: Remember what happens when you use too thin a wire.
Solve 1 more question and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
If a wire with a resistivity of 2 à 10^-8 Ω·m has a length of 10 m and a cross-sectional area of 1.5 mm², what will be its resistance?
π‘ Hint: Use the appropriate unit conversions before calculation.
Question 2
Discuss how selecting the correct wire gauge impacts efficiency in an electrical system, particularly in renewable energy applications.
π‘ Hint: Think about the importance of energy efficiency in today's technology.
Challenge and get performance evaluation