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प्रश्न
Which electric heating device in your home do you think have resistors which control the flow of electricity?
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उत्तर
The following electric heating devices have resistors to control the flow of electricity:
Electric iron
Electric geyser
Electric oven
Electric heater
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संबंधित प्रश्न
Why is the tungsten used almost exclusively for filament of electric lamps?
Write Joule's law of heating.
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(a) half
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Which of the following characteristic is not suitable for a fuse wire?
(a) thin and short
(b) thick and short
(c) low melting point
(d) higher resistance than rest of wiring
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Give scientific reason :
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An electric iron consumes energy at the rate of 420 W when heating is at the maximum rate and 180 W when heating is at the minimum rate. The applied voltage is 220 V. What is the current in each case?
An electric bulb is connected to a 220 V generator. The current is 0.50 A. What is the power of the bulb?
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- no current flows through it.
- current flows after some time.
Choose the combination of correct answer from the following.
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What is the heating effect of electric current?
State the law that explains the heating effect of current with respect to the measurable properties in an electrical circuit.
