Question

What is the direction of the electric field due to an infinite plane sheet?

Options

• Perpendicular to the sheet; outward for \[+\sigma\] and inward for \[-\sigma\]

• Parallel to the sheet; outward for \[+\sigma\] and inward for \[-\sigma\]

• Radially outward from the centre of the sheet

• Perpendicular to the sheet; inward for \[+\sigma\] and outward for \[-\sigma\]

Answer 1

The electric field is perpendicular to the plane sheet. It points outward for positive surface charge density and inward for negative surface charge density.