Same chapter2 marksDifficulty: Easy
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What is meant by the power rating of an electrical appliance, and what does a marking of 220 V, 60 W tell you?
Original Khojo Papers practice question — not from a past board paper.
Answer
The power rating is the electrical energy the appliance converts in one second when it is worked at its stated voltage. A marking of 220 V, 60 W means the appliance is meant to be used on a 220 V supply and will then consume 60 joules of energy every second.
No citable source has been recorded for this record. Treat it as practice material, not as fact.
Explanation
From these two figures the working current and the resistance can both be calculated.
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