To check the things that affect electric field strength, we need to consider the following factors:
1. Quantity of charge: The electric field strength is directly proportional to the quantity of charge. This means that an increase in the amount of charge will result in a stronger electric field.
2. Distance from source: The electric field strength decreases as you move further away from the source of the electric field. This relationship is inversely proportional, meaning that the field strength decreases as the distance increases.
3. Time: In the context of electric field strength, time does not directly affect the strength of the field. The electric field strength depends on the charge distribution and the distance from the source, rather than on time.
4. Angle from center of sphere: The electric field strength is not directly affected by the angle from the center of a sphere. The electric field strength at a specific point around the sphere is determined by the distance from the center and the charge distribution of the sphere, rather than the angle.
Therefore, out of the given options, the quantity of charge and distance from the source are the factors that affect electric field strength. Time and angle from the center of a sphere do not have a direct impact on the strength of the electric field.
