A) 200 W
B) 2500 W
C) 250 W
D) 2000 W
Correct Answer: D
Solution :
When a single heater (resistance \[{{R}_{1}}=R\]) is connected to\[220V\], then it will consume a power\[{{P}_{i}}=1000\text{ }W\], if two such identical heater are connected in parallel (total resistance \[{{R}_{2}}={{R}_{1}}/2=R/2\])to same source, then it will consume power \[{{p}_{2}}\] \[\frac{{{p}_{2}}}{{{p}_{1}}}\frac{{{R}_{1}}}{{{R}_{2}}}{{p}_{2}}=2{{p}_{1}}\] \[=2000W\]
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