Consider two uniformly charged parallel plates as shown in the figure. The magni

Question

Consider two uniformly charged parallel plates as shown in the figure. The magnitudes of the charges are equal Select True or False for the following statements. FalseIf the plates are oppositely charged, there is no electric field at c. TrueIf both plates are negatively charged, the electric field at a points towards the top of the page TrueIf both plates are positively charged, there is no electric field at b. Submit Answer You have entered that answer before Incorrect. Tries 4/8 Previous Tries If the plates are 1.0 cm by 1.0 Cm squares, and the charges on the plates are + -1.8 uC respectively, what is the magnitude of the electric field at b? Assume that the spaing betwen the plates is much less than 1'cm 2.03E5N/C Submit Answer Incorrect. Tries 1/8 Previous Tries

Explanation / Answer

A) If the plates are oppositely charged, there is no electric field at c.
ans true
B) If both plates are negatively charged, the electric field at a points towards the top of the page.
ans false
C) If both plates are positively charged, there is no electric field at b
ans true

charge density D = q/A
   = 1.8x10^-6/1x10^-4 = 1.8 x 10^-2 C/m^2
  
E = q/epsilon naught
   = 1.8 x 10^-2 C/m^2 /8.85 × 10-12 C2 N-1 m-2.
= 2.03e9 N/C

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