Magnetic Field Produced by a Current-Carrying Solenoid. A solenoid is a long coil of wire (with many turns or loops, as opposed to a flat loop). Because of its shape, the field inside a solenoid can be very uniform, and also very strong. ... The field outside the coils is nearly zero .
What is the magnetic field inside and outside a solenoid?
The magnetic field lines follow the longitudinal path of the solenoid inside , so they must go in the opposite direction outside of the solenoid so that the lines can form a loop.
What is the value of magnetic field outside of a long current carrying solenoid?
Note: For a very long solenoid the magnetic field outside will be zero and magnetic will be present only inside the solenoid.
What is the magnetic field inside a long solenoid?
The magnetic field inside a long straight solenoid-carrying current. is zero .
What is the formula of magnetic field inside the current carrying solenoid?
B=μ0nI (inside a solenoid), ... where n is the number of loops per unit length of the solenoid (n=N/l ( n = N / l , with N being the number of loops and l the length).
Why is there no magnetic field outside the solenoid?
Magnetic field outside a long solenoid can never be zero . Because a solenoid of finite length will have edges and field will come out. However, if we imagine a straigth solenoid of infonite length or a toroid, it will not have edges from where lines of force can come out.
What is the magnetic field outside the ideal solenoid?
It is well known that the longitudinal magnetic field outside an ideal solenoid (i.e., one that is wound infinitely tightly and that is infinitely long) is zero .
How do you calculate the magnetic field outside a solenoid?
Outside the solenoid, the magnetic field is zero. n=300turns0.140m= 2.14×103turns/m .
Where is the maximum magnetic field in a solenoid?
The net magnetic field is the sum from each individual loop and is maximum in the middle of the solenoid because that point minimizes the average distance to each loop. At the end of the solenoid the average distance to all the loops is greater, hence the magnetic field is less.
What is the magnetic field like around a solenoid?
Solenoids. A solenoid is a long coil of wire. When a direct electric current is passed through it, the shape of the magnetic field is very similar to the field of a bar magnet . The field inside a solenoid is strong and uniform.
Why is the magnetic field inside a long straight solenoid carrying current is zero?
Inside the solenoid the magnetic field lines will be straight lines and the field will be strong . 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 happens to the magnetic field in the solenoid when the current increases?
Explanation: The magnetic field of a solenoid is directly proportional to the current in it . Hence as the current increases, the magnetic field also increases. ... Hence as the length increases, the magnetic field decreases.
Does the magnetic field outside the solenoid depend on the distance from the solenoid?
Does the magnetic field outside the solenoid depend on the distance from the solenoid? Yes, the magnetic field is stronger closer to the solenoid .
How do you find the magnetic flux through a solenoid?
No, the book is correct, the magnetic flux (the amount of magnetism) going through the solenoid is the magnetic field strength B multiplied by the area of the solenoid A=πR2 . The magnetic flux linkage is the amount of magnetism multiplied by the number of turns of the coil.
Is solenoid a permanent magnet?
1. A solenoid is a temporary magnet as it can readily be demagnetized by stopping the current through the solenoid whereas a bar magnet which is a permanent magnet cannot be demagnetized.
Why is the magnetic field inside a solenoid stronger than outside?
Current in solenoid produces a stronger magnetic field inside the solenoid than outside. The field lines in this region are parallel and closely spaced showing the field is highly uniform in strength and direction.
