A 15. F capacitor is connected to a 50. V battery and becomes ...

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A 15. F capacitor is connected to a 50. V battery and becomes fully charged. The battery is removed and a slab of dielectric that completely fills the space between the plates is inserted.
 
  If the dielectric has a dielectric constant of 5.0, what is the voltage across the capacitor's plates after the slab is inserted?
  A) 0.25 kV
  B) 10. V
  C) 2.0 V
  D) 0.10 kV
  E) 20. V

Question 2

Classical theory predicted that the photocurrent, of the photoelectric effect, should be proportional to the
 
  A) frequency of light.
  B) wavelength of light.
  C) intensity of light.
  D) electric field magnitude.

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Answer to Question 1

B

Answer to Question 2

C

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