PDF chapter test TRY NOW
Take a torch and look inside its bulb. You can also take out the bulb with the help of your teacher.
What do you notice? Do you find a thin wire fixed in the middle of the glass bulb?
, a thin wire fixed in the middle of the glass bulb.
Now switch the torch on and observe which part of the bulb is glowing.
A present inside the bulb is glowing. It is made of gives light when electricity flows through the bulb.
Register for free to see more content