Question

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!!

Answer 1

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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