Charges of and are placed at and respectively

PHYSICS · Subjective · CBSE · Physics · Electrostatic Potential and Capacitance · Electrostatic Potential and Capacitance

Problem

Charges of

+5\,\mu\text{C}

and

-3\,\mu\text{C}

are placed at

O(0,0)

and

A(0,60\,\text{cm})

respectively. What charge

Q

must be placed at

B(80\,\text{cm},0)

so that the electric potential at

C(40\,\text{cm},0)

is zero? State the magnitude and sign of

Q