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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
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- current flows after some time.
Choose the combination of correct answer from the following.
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.
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