Question

Draw a schematic diagram of a circuit consisting of a cell of 1.5 V, 10 Ω resistor and 15 Ω resistors and a plug key all connected in series.

Answer 1

Since P(power)= Vsquare/R.

Here we have V=220volt and P= 1000watt.

=>1000=220×220/R

=>R=220×220/1000

=>R=48.4ohm

Thus resistance of heating filament will be 48.4 ohm

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Answer 2

Answer:

Explanation:

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