Correct option is B
The depth of penetration (also known as the skin depth) is a measure of how deeply an electromagnetic (EM) wave can penetrate into a conducting medium before its amplitude is significantly reduced. It is denoted by the symbol δ
δ.
Skin Depth Formula: The skin depth
δ is given by: δ=1/α
where:
·
α is the attenuation constant, which determines how quickly the EM wave's amplitude decreases as it propagates through the medium.
Relationship with Attenuation Constant:
· From the formula, it is clear that the skin depth
δ is inversely proportional to the attenuation constant α.
· A higher attenuation constant means the wave attenuates more quickly, resulting in a smaller skin depth.
· Conversely, a lower attenuation constant means the wave attenuates more slowly, resulting in a larger skin depth.
