Electric current, Ohm's law, resistance, series/parallel circuits, heating effect, power.
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Q1 · Electricity · EASY
A student connects three resistors of 2 Ω, 3 Ω, and 5 Ω in series across a 12 V battery. What is the current flowing through the circuit?
Q2 · Electricity · MEDIUM
An electric heater draws a current of 5 A when connected to a 220 V supply. If the heater is used for 2 hours daily, how much electrical energy is consumed in one day?
Q3 · Electricity · MEDIUM
Three resistors of 4 Ω, 6 Ω, and 12 Ω are connected in parallel across a battery. If the total current supplied by the battery is 11 A, what is the voltage of the battery?
Q4 · Electricity · EASY
A current of 0.5 A flows through a conductor for 2 minutes. How much charge passes through the conductor in this time?
Q5 · Electricity · HARD
Three resistors of 2 Ω, 3 Ω and 6 Ω are connected in parallel. What is the equivalent resistance of this combination?