An electric heater rated $220 V and 550 W$ is connected to A. C. mains. The current drawn by it is

0.8 A

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2.5 A

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0.4 A

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1.25 A

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Solution

The correct option is D $2.5 A$
Given,
$p o w e r = 500 W V o l t a g e = 220 V$
$P o w e r = V o l t a g e \times C u r r e n t$
$I = \frac{P}{V} = \frac{550}{220} = 2.5 A$

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