Wn each sheet has a uniform surface charge density sigma

Question

Two parallel vertical sheets of infinite extent carry surplus charge and are 50 mm apart.

Part A: When each sheet has a uniform surface charge density Sigma = + 2.4 nC/m², determine the magnitude and direction of the electric field in region I, to the left of the left-most sheet.

Part B: When each sheet has a uniform surface charge density Sigma = + 2.4 nC/m², determine the magnitude and direction of the electric field in region II, between the two sheets.

Part C: When each sheet has a uniform surface charge density Sigma = + 2.4 nC/m² , determine the magnitude and direction of the electric field in region III, to the right of the right-most sheet.