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Identical charges – q each are placed at 8 corners of a cube of each side b. Electrostatic potential energy of a charge + q which is placed at the centre of cub will be
detailed solution
Correct option is C
Length of body diagnonal =3b. ∴ Distance of centre of cube from each corner, r=32bTotal P.E. of charge + q at the centre=8q(−q)4πε0r=−8q24πε0(3b/2)=−4q2πε03bTalk to our academic expert!
Similar Questions
Two charges q1 and q2 are placed 30 cm apart, shown in the figure. A third charge q3 is moved along the arc of a circle of radius 40 cm from C to D. The change in the potential energy of the system is , where k is
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