Physics
The diagram given below shows magnetic field pattern around a bar magnet. Identify the poles A and B.
Related Questions
How is magnetic field due to a straight current carrying wire affected if current in wire is (a) decreased, (b) reversed?
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.
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?
A straight wire lying in a horizontal plane carries a current from north to south. (a) What will be the direction of magnetic field at a point just underneath it? (b) Name the law used to arrive at the answer in part (a).