Four point charges `q_A= +5 muC, q_B = -5 muC, q_C = +5 muC, and q_D=-5muC` are located at the corners of a square ABCD of side 10 cm. What is the force on a charge of `1 muC` placed at the centre of the square?

Three point electric charges q_1 = 6µC, q_2 = 4µC and q_3 = -8µC are placed on the circumference of a circle of radius 1m as shown in the figure. What is the value of the charge q, placed on the circle if the potential at the centre of the circle is zero?

A point charge of + 10 mu c is at a distance of 5 cm directly above the centre of a square of side 10 cm as shown in figure. What is the electric flux through the square?

A point charge +10 muC is a distance 5cm directly above the centre of a square of side 10cm as shown in the figure. What is the magnitude of the electric flux through the square? [Hint: Think of the square as one face of cube with edge 10cm]. '(##VPU_HSS_PHY_XII_CO1_E02_018_Q01##)'