Electric Fields

Question 1

electric fields go from …

Answer 1

Positive to negative - arrow, since the field lines are what a Positive test charge would experience

also field lines enter and leave a surface perpendicularly

Question 2

electric field strength is

Answer 2

amount of force per unit charge a positive test charge will experience

F=Eq ( force on a charge)
to find the EFS at a certain point from a charge,substitute F=Eq into the equation on the F.S for Force between 2 point Charges