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प्रश्न
Name some devices that run using heat effect of electric current
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उत्तर
Electric bulb, geyser, Iron box.
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संबंधित प्रश्न
Why does the cord of an electric heater not glow while the heating element does?
Give two reasons why nichrome alloy is used for making the heating elements of electrical appliances.
The current passing through an electric kettle has been doubled. The heat produced will become:
(a) half
(b) double
(c) four time
(d) one-fourth
Give Scientific reason.
In practice, the unit kWh is used for the measurement of electrical energy, rather than joule.
A coil of an alloy _______ is used in electric heater cooker as a resistor.
Write two devices based on the heating effect of electric current.
An electric bulb is connected to a 220 V generator. The current is 0.50 A. What is the power of the bulb?
Match the following
| 1. | Bulb | a. | Conductor |
| 2. | Electroplating | b. |
Insulator |
| 3. | Pure water | c. | Heating effect of current |
| 4. | Salt solution | d. | Chemical effect of current |
Assertion: A current-carrying wire should be charged.
Reason: The current in a wire is due to the flow of free electrons in a definite direction.
What is a trip switch?
