Question

Write the expression for speed of electromagnetic waves in a medium of electrical permittivity e and magnetic permeability μ. [Foreign 2017]

Answer 1

Answer:

c= 1/√μ∈

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Answer 2

Explanation:

Expressions for the electric and magnetic fields in free space contain the electric permittivity ε0 and magnetic permeability μ0 of free space. These two quantities are not independent but are related to "c", the speed of light and other electromagnetic waves. The magnetic constant μ0 =...