Table of Contents
What is the magnetic field inside and outside a solenoid?
The magnetic field lines exist outside the solenoid, but the number of field lines per unit area (flux) outside the solenoid is much less compared to the number of lines per unit area (flux) inside the solenoid. Hence the magnetic field outside is so weak that it is considered to be practically zero.
Does magnetic field exist inside the solenoid?
The magnetic field inside a solenoid is proportional to both the applied current and the number of turns per unit length. There is no dependence on the diameter of the solenoid, and the field strength doesn’t depend on the position inside the solenoid, i.e., the field inside is constant.
How are the magnetic field lines inside the solenoid?
Answer: A coil of many circular turns of insulated copper wire wrapped closely in the shape of a cylinder is called a solenoid. The field lines inside the solenoid are in the form of parallel straight lines. This indicates that the magnetic field is the same at all points inside the solenoid.
How is the magnetic field produced inside and around a current carrying solenoid?
One end of the solenoid behaves as a magnetic north pole, while the other behaves as the south pole. The field lines inside the solenoid are in the form of parallel straight lines. This indicates that the magnetic field is the same at all points inside the solenoid. That is, the field is uniform inside the solenoid.
Why is the magnetic field inside a solenoid stronger than outside?
The field inside a solenoid is strong and uniform. The small magnetic fields caused by the current in each coil add together to make a stronger overall magnetic field. Outside the solenoid, the small magnetic fields from each wire cancel each other out and the outside field is much weaker.
How the magnetic field intensifies in the inner cavity of the solenoid?
A solenoid is a coil of wire with electric current flowing through it, giving it north and south magnetic poles and a magnetic field. Using more turns of wire in the coil or more current increases the strength of the solenoid’s magnetic field.
How is the magnetic field produced in a solenoid used?
when electric current is passed through solenoid it produces magnetic field. Solenoid are important bcoz they can create controlled magnetic fields and can be used as electromagnet.
Is the magnetic field greater inside or outside a solenoid?
Magnetic field lines only exist as loops, they cannot diverge from or converge to a point like electric field lines can (see Gauss’s law for magnetism). However, the volume outside the solenoid is much greater than the volume inside, so the density of magnetic field lines outside is greatly reduced.
How can you strengthen a solenoid’s magnetic field?
By inserting a core within a coil , the power of the magnetic field can be increased. When you put a ferrous (iron) core inside a solenoid, the magnetic field lines are concentrated and therefore strengthen the magnetic field. The magnetic flux is defined as the number of magnetic field lines that pass through a given area.
Where is the magnetic field uniform in a solenoid?
The ‘uniform’ magnetic field within a long solenoid is parallel to the solenoid axis. Its direction along the axis is given by a curled-straight right-hand rule.
Why magnetic field outside the solenoid is zero?
However, the volume outside the solenoid is much greater than the volume inside, so the density of magnetic field lines outside is greatly reduced . Now recall that the field outside is constant. In order for the total number of field lines to be conserved , the field outside must go to zero as the solenoid gets longer.
How can the magnetic field around a solenoid be strengthened?
The strength of the magnetic field around a solenoid can be increased by: increasing the number of turns on the coil increasing the current placing an iron core inside the solenoid