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प्रश्न
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उत्तर
Electrical power is defined as the rate at which energy is changed or work is done i.e., the work done per second or energy converted per second.
Electrical appliances come with certain number of watts and volts written on them. Power rating of an electrical appliance gives the knowledge of the safe current limit of an appliance and also indicates the voltage above which the appliance should not be used.
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संबंधित प्रश्न
An electric bulb is rated 220 V and 100 W. When it is operated on 110 V, the power consumed will be ______.
Name two safety devices which are connected to the live wire of a household electric circuit
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.
What is the maximum power in kilowatts of the appliance that can be connected safely to a 13 A ; 230 V mains socket?
Electrical power P is given by the expression P = (Q × V) ÷ time. What do the symbols Q and V represent?
A current passes through a resistor. Let K1 and K2 represent the average kinetic energy of the conduction electrons and the metal ions, respectively.
What is the order of current drawn by appliances connected to the ‘power circuit’ of a household?
How does the heat produced by die passage of current in a metallic wire depend on the current in the wire?
How does the heat produced by die passage of current in a metallic wire depend on the resistance of the wire.
