E (Electric Field Strength) and H (Magnetic Field Strength) . H may be difficult to catch for some people.
1. Equations
V (voltage)
E (Electric Field Strength) = ----------------
d (distance)
V(oltage)
The unit is ------------
m(eter)
V can be either constant or variable (in this case usually the small <v> is used.)
I (current)
H (Magnetic Field Strength) = ------------------
d (distance)
A(mpere)
The unit is -------------
m(eter)
I can be either constant or variable (in this case usually the small <i> is used)
A
----- is abstract or abstracted. Difficult to imagine.
m
tQ
I (current) is time derivative of Q (Charge) = -----
dt
and Q (charges) is supposed to move in this case, not static as V and creates magnetic field.
2. Field Concept
V
E = -----
d
When V is constant
E changes almost infinite (∞) to almost zero (0) as d changes almost zero (0) to almost infinite (∞). Reciprocal relation. The point is that E exists at every point (every where) in space.
I
H = -----
d
When H is constant
H changes almost infinite (∞) to almost zero (0) as d changes almost zero (0) to almost infinite (∞). Again reciprocal relation. The point is that H exists at every point (every where) in space.
Every where then Field Theory.
ACT
