What will be the magnetic field outside and inside a long current carrying solenoid?
Outside the solenoid the magnetic field will be weak and the field lines will curl up to form closed loops. Hence, the magnetic field inside a solenoid carrying current will be the same at all the points.
What is the value of magnetic field at one end of a long current carrying solenoid?
The magnetic field at the ends of a very long current-carrying solenoid is half to that at the center.
What will be the value of B at the Centre of a long current carrying solenoid?
In the case of a current carrying solenoid the maximum magnetic field will be along the axis passing through its centre. It is calculated as B=μ0ni, where n is the number of turns and i is the current. The value of the magnetic field through this axis will be constant.
Where is the magnetic field minimum in a solenoid?
(ii) There is a minimum value of magnetic field at a point outside the solenoid near the middle of solenoid and (iii) half of the maximum value at a point near the end of the solenoid.
Where the magnetic field is maximum and minimum?
(i) The magnetic field of a current element is minimum (which is zero) along the axis of a current element. (ii) The magnetic field of a current element is maximum in a plane passing through the element and perpendicular to its axis.
At what point is the magnetic field strength the minimum?
The magnetic field strength is maximum at point A and is minimum at point C because magnetic field is strong where magnetic field lines are crowded and is weak where magnetic field lines are far apart.
Where is the strength of magnetic field maximum and why?
Hence magnetic force of lines are more crowded at the poles compared to the centre of magnet and hence strength of magnetic field at north and south pole magnet is more compared to centre of magnet. And therefore magnetic force is maximum at both the poles of the magnet compared to the centre of magnet.
What does the degree of closeness of magnetic field lines near the poles signify?
The degree of closeness of magnetic field lines near the poles signifies crowding of magnetic field lines which indicates that magnetic field in that region is strong.