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प्रश्न
If the rating of an electric bulb is 100W – 230V, Explain its meaning.
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उत्तर
If an electric bulb is rated as 100W – 230V, it means that the bulb is lighted on a 230V supply, it consumes 100W electric power (i.e., 100J of energy per sec.).
संबंधित प्रश्न
What is the maximum power in kilowatts of the appliance that can be connected safely to a 13 A ; 230 V mains socket?
How many joules are there in one kilowatt-hour?
Which of the following is likely to be the correct wattage for an electric iron used in our homes?
(a) 60 W
(b) 250 W
(c) 850 W
(d) 2000 W
What is the resistance, under normal working conditions of a 240 V electric lamp rated at 60 W? If two such lamps are connected in series across a 240 V mains supply, explain why each one appears less bright.
How does the heat produced by die passage of current in a metallic wire depend on the resistance of the wire.
With reference to the diagram shown below calculate:
(i) The equivalent resistance between P and Q.
(ii) The reading of ammeter.
(iii) The electrical power between P and Q.
What is the resistance of an appliance rated at V volt, P watt?
An electric iron is rated at 230 V, 750 W. What is its resistance? What maximum current can be passed through it?
What is the commercial unit of electrical energy? Represent it in terms of joules.
