Electric Fields Flashcards
What is electric potential?
Energy per unit charge required to move a positive charge from infinity to that point in space
What is electric field strength?
Force experienced per unit of positive charge. Electric field strength is a vector quantity hence is the direction a positive charge would move
Direction of electric field lines is always…
Force experienced by a small positive test charge
When drawing electric field patterns always start with…
drawing perpendicular lines to the surfaces
Between to plates the electric field is…
UNIFORM
What is the work done on a charge moving between parallel plates?
VQ ( work done = force x distance = EQd = (V/d) Q d= VQ)
Is electric potential a vector or a scalar?
Scalar ( HOWEVER look at wether charges are positive or negative, two fields created by positive charges add them, one negative field and one positive field then minus them)!!!
How does increasing the speed of a coil turning in a magnetic field affect the EMF?
Increases the maximum EMF, as the change in magnetic flux linkage is greater
