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.
Related Questions
Two infinitely long parallel wires carry equal currents in the same direction. The magnetic field at the mid-point in between the two wires is :
- Twice the magnetic field produced due to each of the wire.
- Half of the magnetic field produced due to each of the wire.
- Zero
- Square of the magnetic field produced by each wire.
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?