The work required to put the four charges from infinity to the position shown here is

Question

The work required to put the four charges from infinity to the position shown here is, - 0 .65 q 2 π ε 0 a, - 1 .0 q 2 π ε 0 a, 1 - 1 2 2 q 2 π ε 0 a, zero

MARKS App · Accepted Answer

Work is equal to the potential energy of the system. U = 4 k q - q a + 2 k q q a 2 U = k q 2 a - 4 + 2 U = q 2 π ε 0 a - 1 + 2 4 = - 0.65 q 2 π ε 0 a

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