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संबंधित प्रश्न
What is the meaning of the symbol kWh? Which quantity does it represent?
A bulb is rated as 250 V; 0.4 A. Find its : (i) power, and (ii) resistance.
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.
Why is an electric light bulb not filled with air? Explain why argon or nitrogen is filled in an electric bulb.
When a current of 4.0 A passes through a certain resistor for 10 minutes, 2.88 × 104 J of heat are produced. Calculate
the power of the resistor.
the voltage across the resistor.
Calculate the current through a 60 W lamp rated for 250 V. If the line voltage falls to 200 V, how is the power consumed by the bulb affected?
The diagram 31 shows a 3 terminal plug socket.
(i) What is the purpose of the terminal E?
(ii) To which part of the appliance is the terminal E connected?
(iii) To which wire L or N, is the fuse connected and why?
What changes in energy occur in an electric bulb?
An Electric bulb is marked 100 W, 230 V. What how long would this lamp take to consume one unit of electricity?
