North pole of a magnet can be identified by
(a) Another magnet having its poles marked as North pole
and South pole.
(b) Another magnet no matter whether the poles are marked or not.
(c) Using an iron bar.
(d) Using iron filings.
A torch is not functioning, though contact points in the torch
are in working condition. What can be the possible reasons for
this? Mention any three
Think of six activities which use electric current. Also name
the devices used to perform the activity.
Activity you perform Device
Example : Get light Torch
___________ ————–
___________ ————–
___________ ————–
___________ ————–
___________ ————–
Boojho has a cell and a single piece of connecting wire. Without
cutting the wire in two, will he be able to make the bulb glow?
Explain with the help of a circuit diagram.
Paheli wanted to glow a torch bulb using a cell. She could not
get connecting wires, instead, she got two strips of aluminium
foil. Will she succeed? Explain, how?
When the chemicals in the electric cell are used up, the electric cell stops producing electricity. The electric cell is then replaced with a new one. In case of rechargeable batteries (such as the type used in mobile phones, camera and inverters), they are used again and again. How?
A torch requires 3 cells. Show the arrangement of the cells,
with a diagram, inside the torch so that the bulb glows
+91 94284 01196
© Copyright 2025. Doubtora. All Rights Reserved
