A capacitor is charging in a simple RC circuit with a dc battery. Which one of t
ID: 1622199 • Letter: A
Question
A capacitor is charging in a simple RC circuit with a dc battery. Which one of the following statements about this is accurate? There is a magnetic field between the capacitor plates because charge travels between the plates by jumping from one plate to the other. There is no magnetic field the between the capacitor plates because no charge travels between the plates. There is a magnetic field between the capacitor plates, even though no charge travels between them, because the magnetic flux between the plates is changing. There is a magnetic field between the capacitor plates, even though no charge travels between them, because electric flux between the plates is changing. The magnetic field between the capacitor plates is increasing with time because the charge on the plates is increasing. The magnitude of the magnetic field at point P for a certain electromagnetic wave is 2.12 mu T. What is the magnitude of the electric field for that wave at P? (c = 3.0 times 10^8 m/s) 636 N/C 745 N/C 5.23 mu N/C 6.36 mu N/C 7.45 mu N/C The average intensity of the sunlight in Miami, Florida, is 1.04/m^2. For surfaces on the light is which all absorbed, what is the average value of the radiation pressure due to this sunlight in Miami? (c = 3.00 times 10^8 m/s, mu_0 = 4 pi times 10^-7 T middot m/A, epsilon_0 = 8.85 times 10^-12 C^2/N middot m^2) 2.28 mu Pa 1.73 mu Pa 6.93 mu Pa 3.47 mu Pa E) 9.78 mu PaExplanation / Answer
16.
Relation between electric field and magnetic field for EM waves is given by:
c = E/B
So, electric field will be:
E = 2.12*10^-6*3*10^8 = 636 N/C
correct option is A.
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