30a) What is the magnitude of the electric field at point p from one of the 3 nC charges? Remember cm + m.
The E3 from the 3 nC charges will have (x, y) components.
Because there are 23 n charges, one of these components (x or
y) will cancel out, and the other components add together.
b) Erase each wrong answer (x or y), leaving the correct answer.
x or y will components cancel
x or y components will remain
c) Calculate the value of the remaining component of E3 from 1 of
the 3 nc charge.
d) What is the magnitude and direction of the net electric field at
P from both 3 nC charges? Remember symmetry and remaining
components (x or y).
e) Now determine the magnitude and direction of the electric field
at P from the -2 nc charge.
f) What is the magnitude and direc-otion of the net electric field at
P from all the charges?