Are you familiar with that the external magnetic field looks like for a coil that is carrying a current?mitchy16 said:
As in the magnetic field wraps around the current carrying coil? Yes.berkeman said:
You left out a dimension...mitchy16 said:
Also, this is not quite right. What is the equation for the B-field generated by a coil (of a yet-to-be-specified length)?mitchy16 said:
The radius of loops is 10.5cm, distance between is 15cm, and distance to was 20cm?berkeman said:You left out a dimension...
Would it be the following?berkeman said:
Sorry to be confusing, I was just fishing to see if you realized that the length of the coil was not being specified. If the coils are very short and compact, that is different from if they are long solenoids. I guess I'll assume they are short coils for this question?mitchy16 said:
i'd have to check, but that looks reasonable. So if the coils are short, each one looks like the following, right? And when two short coils are close together, you just add the fields vectorially. So what are your answers to the questions now, based on the vector fields of short coils adding vectorially?mitchy16 said:
Okay, so, just for clarification would they attract? Which would produce a larger magnetic field?berkeman said:
The original problem statement said the magnetic fields were pointing in opposite directions, so it's like having 2 bar magnets with the North poles facing toward the other bar magnet. Do they attract or repel?mitchy16 said:
So getting back to the original problem statement, sketch two short coils like that last figure I posted, and separate them by about 2 diameters on a common axis. Have the North poles (the pointy ends of the B-field vectors) face each other.mitchy16 said:
A magnetic field is a region in space where a magnetic force can be detected. It is created by moving electrical charges, such as in a current-carrying wire, and can exert a force on other magnetic materials.
Magnetic fields in opposing coils are created by passing an electric current through the coils. When the current flows through the coils in opposite directions, the magnetic fields created by each coil will oppose each other, resulting in a net magnetic field in the space between the coils.
The purpose of using opposing coils is to create a strong and uniform magnetic field in a specific region. By having the coils in opposite directions, the magnetic field lines will cancel out in the areas outside of the coils, creating a concentrated and consistent field between the coils.
The strength of the magnetic field in opposing coils can be affected by the number of turns in the coils, the distance between the coils, and the amount of current flowing through the coils. Increasing any of these factors will result in a stronger magnetic field.
Opposing coils are used in many different devices, including electromagnets, electric motors, and generators. They are also used in scientific experiments to create magnetic fields for research purposes. Additionally, opposing coils are used in medical devices such as MRI machines to produce strong and uniform magnetic fields for imaging the human body.
