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  4. An electric heater rated 220 V and 550 W is connected to AC mains. The current drawn by it is

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Q. An electric heater rated $220\, V$ and $550\, W$ is connected to $AC$ mains. The current drawn by it is

KCETKCET 2009Alternating Current

Solution:

Given,
$
\text { power }=500 W
$
$V$ oltage $=220 V$
P ower $= V$ oltage $\times$ Current
$
I =\frac{ P }{ V }=\frac{550}{220}=2.5 A
$