Two identical heaters 240V, 100W are connected in series across a supply of 240V line. The combined power is; a)2000 W b)1000 W c)500 W d)4000 W Please show the steps!!
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Two identical heaters 240V, 100W are connected in series across a supply of 240V line. The combined power is; a)2000 W b)1000 W c)500 W d)4000 W Please show the steps!!
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Answer:
500W
Explanation:
let the given resistance be R ohm
total power given to the circuit is 1000W.
so, 1000=240/R
after that, R=240^2/1000 ohm
but the circuit is connected in series,
so, 2R=240^2 /500
Now, put the the value
The total power consumed = 240^2/240^2/500
=500 W.
in question in place of 100 it should be 1000.
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