Physics
A student draws three magnetic field lines 1, 2, 3 of a bar magnet using a compass needle. Are all the lines of force correctly drawn? Give reason for your answer.
Electro-Magnetism
6 Likes
Answer
No, the field line labelled 3 is incorrect and 1, 2 are correct because Magnetic field lines must start from the North pole and end at the South pole outside the magnet but line 3 is shown going from S to N outside the magnet, which is wrong.
Answered By
4 Likes
Related Questions
Horse shoe magnets are used in :
- d.c. motor
- a.c. generator
- electric bell
- all of the above
How is magnetic field due to a straight current carrying wire affected if current in wire is (a) decreased, (b) reversed?
The diagram given below shows magnetic field pattern around a bar magnet. Identify the poles A and B.
The diagrams given below show some magnetic field patterns.
Answer the following questions :
(a) Which pattern shows uniform magnetic field lines?
(b) Which pattern is for a straight current carrying wire?
(c) Which pattern is depicted by current in a loop?