TASK DESCRIPTION :
The diagram below shows particles A, B and C carrying a charge of -124C, +34C and -3C respectively. The three particles are in
vacuum.
- 12 °C
7 cm
-3 MC
A
--
3 cm
В.
+ 3 C
a. Calculate the magnitude of the Coulomb force exerted by A on C.
b. Calculate the magnitude of the Coulomb force exerted by B on C.
c. Draw a vector diagram* to show the Coulomb forces exerted on C and hence, find the magnitude of the total electrostatic force
exerted on C by the other two particles.
d. Find the direction of the total electrostatic force exerted on C, giving your answer as an angle in degrees measured from the line
joining B to C.