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In the given circuit calculate the power consumed in watts in the resistor of 2 Ω :
Define electric power. Express it in terms of potential difference (V) and resistance (R).
An electric oven is designed to work on the mains voltage of 220 V. This oven consumes 11 units of electrical energy in 5 hours. Calculate : (a) power rating of the oven (b) current drawn by the oven (c) resistance of the oven when it is red hot
Which uses more energy, a 250 W TV set in 1 hr, or a 1200 W toaster in 10 minutes?
State the commercial unit of electrical energy and find its SI unit.
The current through a resistor is made three times its initial value. Calculate how it will affect the heat produce in the resistor.
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