Homework Statement
A plasma is to be used as a shield against a laser in the visible spectrum (400 - 700 nm wavelength light) by attenuating the field amplitudes.
(a) What is the minimum electron density that should be used?
(b) What thickness of this shield would be needed to reduce the...
Hello, thanks for helping, so now
Flux , phi = ∫B.dA = μ0μrNId^2/8
B=μ0(H + M) for the toroidal material but we have magnetic linearity so:
Bc= μ0μrHc and Bg=μ0Hg
where Bc and Hc represent the B-field and H-field in the toroid and Bg and Hg in the air gap.
but the total flux...
Homework Statement
A toroidal coil,with N turns of wire carrying a current I, is uniformly wound around a
toroidal core that has a mean radius a, a cross-sectional area A= ∏(d/2)^2, and is made of a linear, isotropic homogeneous material with relative permeability μr. You may assume that the...