Magnetic field (induction) due current in finite straight conductor (wire)
$$B = \frac{\mu\cdot \mu0\cdot I\cdot (cos(a_1)+cos(a_2))}{4\cdot \pi\cdot r}$$
B - magnetic induction
μ - relative magnetic permeability
μ0 - magnetic constant
I - current intensity
r - distance to conductor
a1, a2 - angles
μ - relative magnetic permeability
μ0 - magnetic constant
I - current intensity
r - distance to conductor
a1, a2 - angles
Find
It is known that:
= 