Answer:
Electric field be measured at any point from the force on a stationary test charge at that point, when the force on the test charge is generated only by the coulomb field (E) of static charges.
Explanation:
Total force on a test charge is given as;
F = qE + q(V x B)
F = q(E + V x B)
Where;
F is the total force on the test charge
q is the test charge
E is the electric field
B is the magnetic field
V is the velocity of the test charge
F = q(E + V x B)
for a stationary test charge, V = 0
The equation above reduces to;
F = qE
Thus, electric field be measured at any point from the force on a stationary test charge at that point, when the force on the test charge is generated only by the coulomb field (E) of static charges.
