Question

21. Electric kettle rated at 220 V, 2.2 kW, works for 3 hours. Find he energy consumed

and the current drawn.

Answer 1

☆Hey friend!!! ☆

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Here is your answer ☞
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$given \\ \\ voltage \: = v = 220 \: v \\ \\ power = p = 2.2 \: kw = 2.2 \times {10}^{3} \: w \\ = > p = 2200 \: w \\ \\ time = t = 3 \: hr = 3 \times 3600 \: sec \\ = > t = 10800 \: sec \\ \\ we \: know \: \: that \\ \\ electrical \: energy \: = e = p \times t \\ \\ = > e = 2200 \times 10800 \: j \\ \\ = > e = 23760000 \: j \: \: \: \: ....answer \\ \\ \\ now \\ \\ current \: drawn \: = l = \frac{p}{v} \\ \\ = > l = \frac{2200}{220} \: a \\ \\ = > l = 10 \: a \: \: \: .......answer$

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Hope it will help you ☺☺
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