Electricity
Ohm's law, resistance combinations, electrical power and heating.
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Take a full mock →Q1 · Electricity · HARD
Three resistors of 3Ω, 6Ω, and 9Ω are connected in parallel. What is the equivalent resistance of the combination?
Q2 · Electricity · EASY
A copper wire has a resistance of 8 Ω at 20°C. What happens to the resistance if the temperature of the wire is increased?