I can\'t attach figure so i will draw - is minus and + is plus - + -+ -+ -+ -+ -

Question

I can't attach figure so i will draw - is minus and + is plus - + -+ -+ -+ -+ -+ -+ -+ -+ -+ Two large thin metal plates are parallel and close to each other as in figure shown above. On their inner faces, the plates have surface charge densities of opposite signs and of magnitude 11.8 * 10-22 C/m2. The negatively charged plate is on the left and the positively charged plate is on the right. What are the magnitude and direction of the electric field E (a) to the left of the plates? Magnitude: _____ N/C (B)

Explanation / Answer

Ans:- If oppositely charges parallel conducting plates are treated like infinite planes (neglecting fringing), then Gauss' law can be used to calculate the electric field between the plates. Presuming the plates to be at equilibrium with zero electric field inside the conductors, then the result from a charged conducting surface can be used.

Outside the region electric field cancels to zero.

a). magnitude = 0

b).7-undetermined

c).magnitude = 0

d). 4-direction undetermined

e).betwen the plates = charge density / permittivity of free space =

f).6-direction from positive to negative.

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