If one penetrates a uniformly charged spherical cloud electric field s...
In side the sphere
therefore field decreases directly as the distance form the centre.
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If one penetrates a uniformly charged spherical cloud electric field s...
Electric field strength is defined as the force experienced per unit positive charge at a given point in an electric field. In the case of a uniformly charged spherical cloud, the distribution of charge is symmetrical in all directions from the center of the sphere.
The electric field strength is determined by the magnitude and distribution of charge within the cloud. As we move away from the center of the cloud, the distance between the charge and the point of observation increases. This distance plays a crucial role in determining the electric field strength.
When we penetrate the cloud and move closer to the center, the distance from the center decreases. Consequently, the electric field strength increases because the distance in the denominator of the equation for electric field strength decreases.
To understand this concept further, let's consider the equation for electric field strength (E) due to a spherical charge distribution:
E = k * (Q / r^2)
Where:
- E is the electric field strength
- k is the electrostatic constant
- Q is the total charge enclosed within a sphere of radius r
As we move towards the center of the cloud, the value of r decreases, causing the denominator (r^2) to decrease. Since the numerator (Q) remains constant for a uniformly charged cloud, the electric field strength (E) increases.
In other words, as the distance from the center decreases, the electric field strength increases. This is because the force experienced by a unit positive charge due to the surrounding charge distribution becomes stronger as we move closer to the center.
Therefore, the correct answer is option 'A' - the electric field strength decreases directly as the distance from the center.