11.5 - Factors on which the Resistance of Conductors Depends
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Practice Questions
Test your understanding with targeted questions
What unit measures electrical resistance?
💡 Hint: Remember the name of a famous physicist?
Does increasing the length of a wire increase or decrease its resistance?
💡 Hint: Think about how far the current has to travel.
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Interactive Quizzes
Quick quizzes to reinforce your learning
Which factor does NOT affect the resistance of a conductor?
💡 Hint: Think about the properties discussed.
True or False: Longer wires always have lower resistance.
💡 Hint: Consider the distance current needs to travel.
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Challenge Problems
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You have a resistor of resistivity 2.5 × 10^-8 Ω·m, length 50 m, and area of 0.001 m². Calculate the resistance.
💡 Hint: Pay attention to units and rearrange the formula carefully!
Explain the practical implications of high resistance in materials used for electrical wiring. Why is this consideration crucial?
💡 Hint: Think about safety and efficiency in electrical applications!
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