1)The Poynting vector S describes flow of electromagnetic energy in space . A flat capacitor , which is charged and then disconnected from power supply , is situated within a permanent magnet with its plates being parallel to the magnetic field. Is the magnitude of S in space between th plates zero or has some finite value ? if it is none zero what is the direction of S ? 2)Compare the magnitudes of the Poynting vectors of two electromagnetic waves in the visible range of the EMW spectrum in vacuum and in water with the refractive index n =1.33
1)The Poynting vector S describes flow of electromagnetic energy in space . A flat capacitor , which is charged and then disconnected from power supply , is situated within a permanent magnet with its plates being parallel to the magnetic field. Is the magnitude of S in space between th plates zero or has some finite value ? if it is none zero what is the direction of S ? 2)Compare the magnitudes of the Poynting vectors of two electromagnetic waves in the visible range of the EMW spectrum in vacuum and in water with the refractive index n =1.33
Chapter16: Electromagnetic Waves
Section: Chapter Questions
Problem 99AP: The Poynting vector describes a flow of energy whenever electric and magnetic fields are present....
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1)The Poynting vector S describes flow of electromagnetic energy in space . A flat capacitor , which is charged and then disconnected from power supply , is situated within a permanent magnet with its plates being parallel to the magnetic field. Is the magnitude of S in space between th plates zero or has some finite value ? if it is none zero what is the direction of S ?
2)Compare the magnitudes of the Poynting vectors of two electromagnetic waves in the visible range of the EMW spectrum in vacuum and in water with the refractive index n =1.33
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