Question

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1. A lamp rated 100W at 220V is conected to the mains
electric supply. What current is drawn from the
supply line if the voltage is 220V
[CBSE 2009)
2. Calculate the electric energy consumed by a 1200W
toaster in 20 minutes.
(CBSE 2009]
3. Write the formula for the amount of heat (H)
produced in a resistor (R) when current
through it for time (t). Give three applicat
heating effect of current.
4. Define power. Give its S.I. unit and define it
5. A current of 5A flows through a 12 2 resistor,
is the rate at which heat energy is produced
resistor.
[CBSEX​

Answer 1

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