Question 20 of 26 Map Sapling Learning Two circular plates with radius 7.22 cm h

Question

Question 20 of 26 Map Sapling Learning Two circular plates with radius 7.22 cm have equal and opposite charge of magnitude 3.852 . Calculate the electric field between the two plates. Assume that the separation distance is small in comparison to the diameter of the plates. Number N/C The plates are slowly pulled apart, doubling the separation distance. What changes occur with the electric field between the plates? (Again, assume the separation distance remains small in comparison to the diameter of the plates.) O O O O O The electric field increases by a factor of 4. The electric field increases by a factor of 2. The electric field stays the same. The electric field decreases by a factor of 2. The electric field decreases by a factor of 4.

Explanation / Answer

Area of each plate, A = pi*r^2

= pi*0.0722^2

= 0.01637 m^2

eletric field between the plates, E = q/(A*epsilon)

= 3.852*10^-6/(0.01637*8.854*10^-12)

= 2.66*10^7 N/c

the elctric field stays the same

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