Explain 4 factors on which magnitude of magnetic field depends also state the nature of this dependence
Answers
1.Magnitude of magnetic field produced at a given point increases as the strength of the magnet or the current carrying coil increases
2.magnitude of magnetic field decreases as the distance from the magnet or current carrying coil increase
3.In case of current carrying wire,magnitude of magnetic field is inversely proportional to the length of wire bcoz whn length increases then the resistance of the sire also increases and flow of current is less
4.magnitude of magnetic field of a current carrying wire is directly proportional to its area of cross section because current passing through a conductor is directly proportional to its area of cross section..
The 3rd and 4th point is so bcoz magnetic field increases as current through the conductor increases