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
see full answer
High-Paying Jobs That Even AI Can’t Replace — Through JEE/NEET
🎯 Hear from the experts why preparing for JEE/NEET today sets you up for future-proof, high-income careers tomorrow.
An Intiative by Sri Chaitanya
a
−42q2πε0b
b
−82q2π ε0b
c
−4q23πε0b
d
−82q23πε0b
answer is C.
(Unlock A.I Detailed Solution for FREE)
Best Courses for You
JEE
NEET
Foundation JEE
Foundation NEET
CBSE
Detailed Solution
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)=−4q2πε03b