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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
An electric refrigerator rated 400 W operates 8 hour/day. What is the cost of the energy to operate it for 30 days at Rs 3.00 per kW h?
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.
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