In the figure the three particles are fixed in place and hav
In the figure the three particles are fixed in place and have charges q_1 = q_2 = +2e and q_3 = +3e, Distance a = 3.64 mum. what is the magnitude of the net electric field at point p due to the particles?
Solution
Electric field due to charges Q1 and Q2 will cancel out each other since they have same magnitude and are in oppoisite directions.SO Net electric field is
Enet=E3=KQ/r3
since r3=acos45 =3.64*10-6*cos45
r3=2.574*10-6 m
Enet=(9*109)(3*1.6*10-19)/(2.574*10-6)2
Enet=652.1 N/C
