railway RRB JE (CBT I + CBT II) Mock Test 2024 Electromagnetic Theory Electromagnetic Wave Propagation
For an EM wave travelling in a plane, the correct equation for characteristic impedance Z for the medium with permittivity of ϵ and permeability μ is:
1
\(Z = \sqrt {\frac{\mu }{\epsilon}}\)
2
\(Z = \sqrt {\frac{\epsilon}{\mu }}\)
3
\(Z = \sqrt {\mu \epsilon}\)
4
\(Z = \frac{1}{{\sqrt {\mu \epsilon} }}\)