Final Answer:
Halving the distance away from an infinite plane of charge causes the magnitude of the electric field to double.
Step-by-step explanation:
The electric field due to an infinite plane of charge is given by the following equation:
E = σ / (2ε₀)
where:
E is the electric field
σ is the surface charge density
ε₀ is the permittivity of free space
The surface charge density is the charge per unit area on the plane. Since the plane is infinite, the surface charge density is constant.
If we halve the distance away from the plane, the electric field will double. This is because the electric field is inversely proportional to the square of the distance from the plane.