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प्रश्न
When current is switched ‘on’ in a room heater, it ______.
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उत्तर
When current is switched ‘on’ in a room heater, it becomes red hot and emits heat.
Explanation:
The working of a room heater is based on the heating effect of electric current, which converts electrical energy into heat energy to warm the room.
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संबंधित प्रश्न
Why does the cord of an electric heater not glow while the heating element does?
The safety device based on the heating effect of electric current is called a ______.
The current passing through a room heater has been halved. What will happen to the heat produced by it?
If the current flowing through a fixed resistor is halved, the heat produced in it will become:
Why does tungsten metal used to make solenoid type coil in an electric bulb?
Heating effect of current is called ______
The heating element of an electric iron is made up of:
Unscramble the following words:
SFEU
Your teacher has shown you the following activity.
Activity: Teacher has wound a long insulated piece of wire around an iron nail in the form of a coil. Free ends of the wire are connected to a cell through a switch as shown in the following figure. The current is switched on and some pins are placed near the ends of the nail.
Write down any three questions that come to your mind about this activity.
In the electric equipment producing heat like iron, electric heater, boiler, toaster etc., an alloy such as nichrome is used, not pure metals.
