railway RRB Technician Grade 1 Mock Test 2024 Physics Electric Potential Electric Potential and Electric Potential Energy
Four point charges -Q, -q, +2q and +2Q respectively are placed on the four vertices of a square. The relation between Q and q for which the potential at the centre of square is zero, is
1
Q = q
2
Q = 1/q
3
Q = -q
4
Q = -1/q