Fields Flashcards
What is the definition for electric potential?
The electric potential at point is the work done to a unit positive test charge from infinity to a point.
Is electric potential a vector or scalar?
It is a scalar yet can be either positive or negative based on the charge of the particle.
What is the definition of electric field strength? Give an equation.
It is the force per unit charge on a positive test charge placed at a point. E = F/Q
Is electric field strength a vector or scalar quantity?
It is a vector.
What is the electric field strength in a uniform electric field of two parallel plates with voltage V?
E = V/d where d is the distance between the two plates.
What value is electric potential at infinity?
0 because electric potential is the work done to move an object from infinity to a point.
What is an equipotential?
A line where the electric potential is the same..
What is the potential gradient?
The rate of change of electric potential with respect to distance. Equal to -electric field strength.
In a non uniform field what do closer equipotentials mean?
A greater potential gradient.
