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प्रश्न
State two factors on which the electrical energy consumed by an electrical appliance depends.
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उत्तर
Two factors on which electrical energy consumed by an electrical appliance depends are:
- power
- time
संबंधित प्रश्न
An electric motor takes 5 amperes current form a 220 volt supply line. Calculate the power of the motor and electric energy consumed by it in 2 hours.
The commercial unit of energy is :
(a) watt
(b) watt-hour
(c) kilowatt-hour
(d) kilo-joule
An electric kettle for use on a 230 V supply is rated 3000 W. For safe working, the cable connected to it should be able to carry at least:
(a) 2 A
(b) 5 A
(c) 10 A
(d) 15 A
An electric bulb is rated at 220 V, 100 W. (a) what is its resistance? (b) what safe current can be passed through it?
Name the physical quantity which is measured in kW.
What changes in energy occur in an electric bulb?
What is ‘Rating’ of an electric appliance?
