Advertisements
Advertisements
प्रश्न
How many joules are there in one kilowatt-hour?
उत्तर
1 kilowatt-hour = 36,00,000 joules
APPEARS IN
संबंधित प्रश्न
Define Electric power
What determines the rate at which energy is delivered by a current?
Which of the following terms does not represent electrical power in a circuit?
An electric bulb is rated 220 V and 100 W. When it is operated on 110 V, the power consumed will be ______.
Why is an electric light bulb not filled with air? Explain why argon or nitrogen is filled in an electric bulb.
Electrical power p is given by the expression P = (Q × V) ÷ time. Express the power P in terms of current and resistance explaining the meaning of symbols used there in.
List the names of three electrical gadgets used in your house. Write their power, voltage ratingand approximate time for which each one is used in a day. Hence find the electrical energyconsumed by each in a day.
A simple electric circuit has a 30 V battery and a resistor ot 60 o. What will be the current in the circuit? The resistance of the oonnecting wires is negligible.
I ampere of current is passed through a resistor of resistance R ohm for time t second. Obtain expression for
(i) the electrical energy, and
(ii) the electrical power spent.
Unit of electric power may also be expressed as:
