Practice - Cross-Sectional Area (A)
Practice Questions
Test your understanding with targeted questions
What is the effect of increasing the cross-sectional area of a wire on the current it can carry?
💡 Hint: Think about how a larger pipe carries more water.
What unit is used to measure resistance?
💡 Hint: It's named after a famous scientist.
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Interactive Quizzes
Quick quizzes to reinforce your learning
What happens to resistance when the cross-sectional area of a wire increases?
💡 Hint: Think about how it could affect water flow in a pipe.
True or False: The thicker a wire, the more current it can carry without overheating.
💡 Hint: Remember what happens when you use too thin a wire.
1 more question available
Challenge Problems
Push your limits with advanced challenges
If a wire with a resistivity of 2 × 10^-8 Ω·m has a length of 10 m and a cross-sectional area of 1.5 mm², what will be its resistance?
💡 Hint: Use the appropriate unit conversions before calculation.
Discuss how selecting the correct wire gauge impacts efficiency in an electrical system, particularly in renewable energy applications.
💡 Hint: Think about the importance of energy efficiency in today's technology.
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Reference links
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