When the magnitude of charge changes, the electric field also changes. This is because the electric field is directly proportional to the charge and inversely proportional to the square of the distance between the charges. Therefore, by changing the magnitude of charge, the strength of the electric field at a given point will also change.
To calculate the electric field when the charge is changing over time, you can use the equation E = kq/r^2, where E is the electric field, k is the Coulomb's constant, q is the charge, and r is the distance between the charges. You will need to recalculate the electric field at different time intervals as the charge changes.
The direction of the electric field is always in the direction that a positive test charge would move in the presence of the electric field. Therefore, the direction of the electric field will change as the direction of the changing charge changes.
Changing the distance between the charges will change the strength of the electric field. As the distance between the charges decreases, the electric field will become stronger, and as the distance increases, the electric field will become weaker.
Yes, the electric field can exist without a changing charge. The electric field is created by stationary charges and can exist even when the charges are not changing. However, the electric field may change if the distance between charges changes or if new charges are introduced into the system.