A student places a positive point test charge at a point P in an electrostatic field
PHYSICS · Subjective · CBSE · Physics · Electric Charges and Fields · Electric Charges and Fields
Problem
A student places a positive point test charge at a point P in an electrostatic field.
(i) Define the electric field intensity at point P.
(ii) Describe, with the aid of a clearly labelled vector diagram, how the direction of the electric force acting on the test charge would change if the test charge were replaced by an equal-magnitude negative charge.
(iii) State the SI unit of electric field intensity and explain why this unit is dimensionally equivalent to newton per coulomb.
Write your answers in complete sentences with supporting reasoning wherever required.