In the figure the charge Q is at the centre of the circle. Work done is maximum when
another charge is taken from point P to

K
L
M
N
As we have learnt,
Potential Energy Of a System Of n Charge -
- wherein
For system of 3 charges.
Work done in moving a charge from P to L, P to M and P to N is zero.
Option 1)
K
Option 2)
L
Option 3)
M
Option 4)
N
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