You measure it at two randomly selected times, and determine whether
the measurements are the same or different.
On the chance that the field is varying periodically, you should repeat
the procedure several times, just to make sure that your measurements
are not coincidentally spaced by some multiple of its period.
In an ideal capacitor, the electric field is constant between the plates. This means that the electric field is uniform and uniform inside the capacitor.
In a region of uniform electric field, the electric potential is constant.
The electric field is constant in a given system when there are no changes in the distribution of charges or the geometry of the system.
No, the electric field oscillates in magnitude and direction as it propagates in the electromagnetic wave.
To determine the direction of the electric field, you can use a positive test charge. The direction of the electric field is the direction in which a positive test charge would move if placed in that field.
To calculate the maximum electric field strength in a system, you need to determine the charge distribution and geometry of the system. Then, use the formula E k q / r2, where E is the electric field strength, k is the Coulomb's constant, q is the charge, and r is the distance from the charge. By finding the maximum value of E at any point in the system, you can determine the maximum electric field strength.
From an electric field vector at one point, you can determine the direction of the electrostatic force on a test charge of known sign at that point. You can also determine the magnitude of the electrostatic force exerted per unit charge on a test charge at that point.
In a region of space where the potential is constant, the electric field is zero. This is because the electric field is the gradient of the electric potential, so if the potential is not changing, there is no electric field present.
To determine the charge density from an electric field, you can use the formula: charge density electric field strength / (2 epsilon), where epsilon is the permittivity of the material. This formula relates the electric field strength to the charge density of the material.
No, the electric field does not necessarily have to be zero just because the potential is constant in a given region of space. The electric field is related to the potential by the gradient, so if the potential is constant, the electric field is zero only if the gradient of the potential is zero.
The intensity of an electric field is determined by the amount of charge creating the field and the distance from the charge. The closer you are to the charge, the stronger the electric field will be.
Radioactive decay can't be controlled by an electric field - or by almost anything, for that matter.