Magnetic field outside solenoid

In summary, a solenoid is a coil of wire used to create a controlled magnetic field. The magnetic field is stronger and more uniform inside the solenoid compared to outside. However, a solenoid can still produce a magnetic field outside itself, which is determined by the current, number of turns, distance, and permeability of the surrounding material. The direction of the field outside the solenoid can be determined using the right-hand rule.
  • #1
anthell
9
0
Instead of the usual

B = μ0NI for field inside solenoid...

how should i go about finding the field let say... 10cm away from one end of the solenoid
1. directly at the z-axis
2. not directly at the z-axis

this is assuming the solenoid has finite length, finite number of turns ,finite radius
(ex. L = 25cm , R = 10cm, N = 1000, I = 1A)

Please help me out hehe thx
 
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  • #2
You can use the Biot–Savart law or some equations derived from that law.
 

1. What is a solenoid?

A solenoid is a coil of wire that produces a magnetic field when an electric current is passed through it. It is typically used to generate a controlled magnetic field for various applications.

2. How does a magnetic field outside a solenoid differ from inside?

The magnetic field outside a solenoid is weaker and less uniform compared to the field inside. This is because the magnetic field lines are more concentrated inside the solenoid due to the closer spacing of the wire coils.

3. Can a solenoid produce a magnetic field outside of itself?

Yes, a solenoid can produce a magnetic field outside of itself. The strength of the field depends on the current passing through the solenoid, the number of turns in the coil, and the distance from the solenoid.

4. How is the direction of the magnetic field outside a solenoid determined?

The direction of the magnetic field outside a solenoid can be determined using the right-hand rule. If the current is flowing in the clockwise direction, the magnetic field outside the solenoid will point towards you. If the current is flowing counterclockwise, the field will point away from you.

5. What factors affect the strength of the magnetic field outside a solenoid?

The strength of the magnetic field outside a solenoid is affected by the current passing through the solenoid, the number of turns in the coil, the distance from the solenoid, and the permeability of the material surrounding the solenoid.

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