Electric Power

IMPORTANT

Electric Power: Overview

This Topic covers sub-topics such as Electric Power, Cost Calculation of Electric Power and, Calculation of Electric Power Used

Important Questions on Electric Power

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An electric bulb is rated as 5 W, 110 V. How many of these bulbs can be connected in parallel across the two wires of 110 V supply line if the maximum current which can be drawn is 5 A?

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How many 60 W bulbs may be safely run on 220 V using a 5 A fuse?

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The amount of energy consumed by an electrical appliance in unit time is called _____.

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5 electrical appliances are used for 10 hours per day in a home. If two appliances are of 200 W and three appliances are of 400 W then find number of units consumed by these appliances in a day.

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What do you mean by electric power?

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An electrical device is said to consume 1 kw hr of energy if it consumes-

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If the voltage in the circuit doubles and the current is halved, the electric power

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Calculate the power of a heating appliance having 230 ohm resistance when 2 A current passes through it.