engineering recuitment NPCIL Scientific Assistant Physics Mock Test Physics Electromagnetic Waves Energy Transport and the Poynting Vector
If the resistivity of a good conductor is decreased by a factor of 4, the skin depth of an electromagnetic wave incident on it
1
Decreases by a factor of 2
2
Decreases by a factor of 4
3
Increases by a factor of 4
4
Increases by a factor of 2