Electricity (Class 10)
Electric current, potential difference, Ohm's law, resistance, series/parallel combinations, heating effect.
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Take a full mock →Q1 · Electricity (Class 10) · EASY
Three resistors of 2 Ω, 3 Ω, and 6 Ω are connected in parallel. What is the equivalent resistance of the combination?
Q2 · Electricity (Class 10) · HARD
An electric heater of resistance 20 Ω draws a current of 5 A from a supply. If the heater is used for 2 hours, how much electrical energy in kWh is consumed?
Q3 · Electricity (Class 10) · MEDIUM
Three resistors of 2Ω, 3Ω, and 6Ω are connected in parallel. If the potential difference across the combination is 12 V, what is the total current flowing through the circuit?
Q4 · Electricity (Class 10) · MEDIUM
An electric heater of resistance 10 Ω is connected to a 220 V supply for 2 hours. How much electrical energy is consumed?