A + 5.0-C charge is moved from a negative to a positive plate of ...

[segrsyd]

A + 5.0-C charge is moved from a negative to a positive plate of a parallel plate capacitor. In moving this charge 0.30 mJ of energy is used. What is the potential difference between the plates of this capacitor?
 
  A) 60 V
  B) 81 V
  C) 55 V
  D) 23 V
  E) 0 V

Question 2

An 8.000-mW laser beam emits a cylindrical beam of light 0.9000 mm in diameter. What is the rms value of the electric field in this beam?
 
  A) 2176 N/C
  B) 1000 N/C
  C) 1088 N/C
  D) 4122 N/C
  E) 2000 N/C

[katheyjon]

Answer to Question 1

A

Answer to Question 2

A