- Data Structure
- Networking
- RDBMS
- Operating System
- Java
- MS Excel
- iOS
- HTML
- CSS
- Android
- Python
- C Programming
- C++
- C#
- MongoDB
- MySQL
- Javascript
- PHP
- Physics
- Chemistry
- Biology
- Mathematics
- English
- Economics
- Psychology
- Social Studies
- Fashion Studies
- Legal Studies
- Selected Reading
- UPSC IAS Exams Notes
- Developer's Best Practices
- Questions and Answers
- Effective Resume Writing
- HR Interview Questions
- Computer Glossary
- Who is Who
(a) Define magnetic field lines. Describe an activity to draw a magnetic field line outside a bar magnet from one pole to another pole.
(b) Explain why a freely suspended magnet always points in the north-south direction.
(a) Magnetic field lines, also known as magnetic lines of force are the space around a magnet wherein magnetic force can be felt.
Activity:
- Take a small compass and a bar magnet.
- Using an adhesive material, place the bar magnet in a fixed position on the drawing board.
- The boundary of the magnet should be marked. The compass can be moved from one pole of the bar magnet to another pole.
- The compass should be placed near the north pole of the magnet. The south pole of the needle points towards the north pole of the magnet.
- We can trace the field lines by moving the compass gradually and drawing a corresponding line which the compass would trace while following a particular line of force.
- At last, we will get a magnetic field pattern, a smooth curve showing magnetic field lines leaving the north pole of the magnet and enter its south pole.
(b) A freely suspended magnet always points towards the north-south direction because our Earth behaves as a magnet.
The magnet points towards the south pole in the geographical north and the north pole in its geographical south.
Advertisements