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Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
What unit measures electrical resistance?
π‘ Hint: Remember the name of a famous physicist?
Question 2
Easy
Does increasing the length of a wire increase or decrease its resistance?
π‘ Hint: Think about how far the current has to travel.
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
Which factor does NOT affect the resistance of a conductor?
- Length
- Material
- Temperature
- Color
π‘ Hint: Think about the properties discussed.
Question 2
True or False: Longer wires always have lower resistance.
- True
- False
π‘ Hint: Consider the distance current needs to travel.
Solve and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
You have a resistor of resistivity 2.5 à 10^-8 Ω·m, length 50 m, and area of 0.001 m². Calculate the resistance.
π‘ Hint: Pay attention to units and rearrange the formula carefully!
Question 2
Explain the practical implications of high resistance in materials used for electrical wiring. Why is this consideration crucial?
π‘ Hint: Think about safety and efficiency in electrical applications!
Challenge and get performance evaluation