Series vs parallel electrical connection for coaxial Helmholtz coils

[strokebow]

Hi,

With the condition that 2 helmholtz coils are parallel with each other sharing the same axis in space . . .

What are the differences between electrically connecting up the coils in series and in parallel?

cheers

 

[mfb]

That depends on the circuit you connect them to. In a static setup, they are like resistors.

 

[strokebow]

Thanks for your response.

In the case that they are being driven to produce a constant magnetic field between them.

 

[mfb]

The magnetic field is always constant if the current in coils is constant. And its second derivative vanishes if the coils are identical and have the same current inside.

The absolute value of the magnetic field there depends on that current, and that depends on the electric setup.

 

[strokebow]

Thanks very much.

How would things differ if they were driven by an oscillator?

 

[mfb]

The magnetic field would oscillate as well.