10 Questions
What is the purpose of inserting a core of soft iron in an electromagnet?
To increase the strength of the magnetic field
What is the source of electricity used in a torch?
Dry cell
What is the purpose of using mains as the source of electricity for lighting a table lamp and running a refrigerator?
To power the appliances
What is a group of two or more cells called?
Battery
What materials pass electricity through them?
Conductors
Which materials do not pass electricity through them?
Insulators
In which direction does a freely suspended magnet rest?
North-south direction
What material are electromagnets made up of?
Soft iron
What is the purpose of an electromagnet in an electric bell?
To make and break the circuit
What is the source of electricity in a torch?
Dry cell
Learn about the properties of a bar magnet, including its attractive and directive properties, as well as how like poles repel and unlike poles attract. Discover that poles always exist in pairs. Test your knowledge on how to determine whether a given rod is a magnet or not.
Make Your Own Quizzes and Flashcards
Convert your notes into interactive study material.
Get started for free
