Forces in Coaxial Line

Forces in Coaxial Line Applet

Goto: Coaxial Forces Output Format Notes

Definition:

Equation

Parameters

Diagram

P_B=B²/2μ₀

P_E=ε₀E²/2

P_B = Magnetic field pressure
P_E = Electric field pressure

Note:

Magnetic force repels conductors

Electric force attracts conductors

Calculate Forces in a Coaxial Section: top

Parameter

Value

Units

Special Values

Inputs: V₀ (applied voltage)

I (applied current)

a (inner rad.)

b (outer rad.)

Outputs: Inner Conductor E (elect.field)

Inner Conductor B (mag.field)

Inner Conductor P_B (mag.force)

Inner Conductor P_E (elect.force)

Outer Conductor E (elect.field)

Outer Conductor B (mag.field)

Outer Conductor P_B (mag.force)

Outer Conductor P_E (elect.force)

Notes: top

It is assumed that coax is filled with air (i.e. ε = ε₀). Multiply electric force by 9 if filled with water.
It is assumed that the materials are non-magnetic (i.e. μ = μ₀).
MKS units

	Parameter	Value	Units	Special Values
Inputs:	V₀ (applied voltage)
Inputs:	I (applied current)
	a (inner rad.)
	b (outer rad.)


Outputs:	Inner Conductor E (elect.field)
Outputs:	Inner Conductor B (mag.field)
	Inner Conductor P_B (mag.force)
	Inner Conductor P_E (elect.force)

	Outer Conductor E (elect.field)
	Outer Conductor B (mag.field)
	Outer Conductor P_B (mag.force)
	Outer Conductor P_E (elect.force)

Definition:

Equation

Parameters

Diagram

Calculate Forces in a Coaxial Section: top

Parameter

Value

Units

Special Values

Output Format: top

Notes: top