How is an electric field determined?

[me_and_you]

I know that an electric field is a region that surrounds a charged particle and exerts a force on the particle, but I don't know how to determine an electric field.

 

[dontdisturbmycircles]

I am assuming you need to find the equation for the electric field?

Remember that $$E=\frac{F}{q}$$ where F is the force felt by an electrically charged object with charge q.

 

[Redbelly98]

It depends on the problem being asked. Your textbook should have the equation for the electric field due to a point charge. Perhaps it also has equations for the electric fields of a line of charge as well as a charged plate or plane.

And sometimes, the electric field is simply a given in the problem statement.