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4 cards from this section. Quick, good the night before a test.
What unit measures electrical resistance?
Remember the name of a famous physicist?
Does increasing the length of a wire increase or decrease its resistance?
Think about how far the current has to travel.
Which factor does NOT affect the resistance of a conductor?
Think about the properties discussed.
True or False: Longer wires always have lower resistance.
Consider the distance current needs to travel.
You have a resistor of resistivity 2.5 × 10^-8 Ω·m, length 50 m, and area of 0.001 m². Calculate the resistance.
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?
Think about safety and efficiency in electrical applications!
4 more questions in this section. Enroll free to practise them all.
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