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प्रश्न
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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उत्तर
Some of the questions can be
- Why does the nail attract the pins?
- What will happen if we connect more cells in the circuit?
- What will happen if we use some other material like a straw in place of the nail?
- What will happen if we wrap the wire on the nail more tightly?
APPEARS IN
संबंधित प्रश्न
When current is switched ‘on’ in a room heater, it ______.
Which electric heating device in your home do you think have resistors which control the flow of electricity?
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True or False – If False give the correct answer
The fuse wire does not melts whenever there is overload in the wiring.
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An electric fuse is a wire made up of a material having ______ melting point.
The electric fuse works on the Joule heating principle.
What is the heating effect of electric current?
An electric iron is rated 220 V, 2 kW. If the iron is used for 3h daily find the cost of running it for one week if it costs ₹ 4.25 per kWh.
