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Current Electricity
Drift velocity, Ohm's law, resistivity, temperature dependence, Kirchhoff's laws, Wheatstone bridge, potentiometer, internal resistance.
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Take a full mock →Q1 · Current Electricity · EASY
A wire of resistance 10 Ω is stretched to double its length. What is its new resistance, assuming the volume remains constant?
Q2 · Current Electricity · MEDIUM
Three resistors of 2 Ω, 3 Ω and 6 Ω are connected in parallel. What is the equivalent resistance of the combination?
Q3 · Current Electricity · EASY
The device used to measure electric current in a circuit is: