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Q.
If two identical heaters each rated as ($1000 \,W, 220 \,V)$ are connected in parallel to $220$ volt, then the total power consumed is:
ManipalManipal 2005Current Electricity
Solution:
When a single heater (resistance $R_{1}=R$ ) is connected to $220\, V$, then it will consume a power $P_{1}=1000 \,W$, if two such identical heaters are connected in parallel (total resistance $\left.R_{2}=R_{1} / 2=R / 2\right)$ to same source, then it will consume power $P_{2}$
$\frac{P_{2}}{P_{1}} =\frac{R_{1}}{R_{2}} $
$P_{2} =2 P_{1} $
$=2000 \,W$