/10 Report a question What's wrong with this question? You cannot submit an empty report. Please add some details. 12345678910 Chapter 8 : Electromagnetic Waves This Quiz Contains a set of 10 Questions. The Passing Cut-off is 60%. To start the Quiz, click on the Start Button. All the Best! 1 / 10 The Poynting vector represents Magnetic energy Electric energy Energy flux per unit area Electric force per charge 2 / 10 In a charging capacitor, if electric field between plates changes at rate 2 × 10⁶ V/m·s and area = 0.02 m², find displacement current. 0.354×10⁻⁷ A 3.54×10⁻⁷ A 0.18 A 0.354 mA 3 / 10 The visible spectrum ranges from 100–400 nm 400–700 nm 700–900 nm 900–1200 nm 4 / 10 The typical wavelength of X-rays lies between 10–1000 m 1–100 nm 0.01–10 nm 1–100 µm 5 / 10 Which radiation has maximum photon energy? UV rays X-rays Infrared Gamma rays 6 / 10 Which of the following EM rays has the least energy? UV X-ray Infrared Gamma 7 / 10 An EM wave propagates along Z. If E = E₀ sin(kz – ωt) î, then B is along î ĵ k̂ –ĵ 8 / 10 Ratio of energy densities of E and B fields in an EM wave is ½ 1 2 4 9 / 10 The unit of Poynting vector is Wb/m² J N/m² W/m² 10 / 10 Which physical quantity is continuous across the boundary of a capacitor plate? Conduction current Displacement current Both the above currents Neither Your score is 0% Restart quiz
