3) Electric Fields Flashcards
(5 cards)
1
Q
Define the electric field strength, E, at a point in an electric field.
A
force per unit charge acting on a small positive charge at that point.
2
Q
State whether electric field strength is a scalar or a vector quantity.
A
vector.
3
Q
State, in words, Coulomb’s law.
A
the force between two point charges is proportional to product of charges and inversely proportional to square of distance between the charges.
4
Q
Define the electric potential at a point in an electric field.
A
work done per unit charge on a small positive test charge
in moving the charge from infinity to the point.
5
Q
State Faraday’s law.
A
induced emf is proportional to rate of change of flux linkage.
