Answer:
Step-by-step explanation:
Given
magnitude of charge=4.5\\u C
length of side of triangle=1 cm
There are two Positive charge and one negative charge
So net Force on negative charge is
sum of

where
=force exerted by first positive charge on negative charge
=force exerted by second positive charge on negative charge



Two are at an angle of 60 (as it is placed at a corner of equilateral triangle)



Force Experienced by a positive charge will be of attractive and repulsive in nature
Two Forces are at an angle of 120 therefore

