Identical Point Charges (+30 $\mu$ C)are Placed at the Corners of a Rectangle (4

question 2

Multiple Choice

Identical point charges (+30 $\mu$ C) are placed at the corners of a rectangle (4.0 m *6.0 m) .How much external energy is required to bring a charge of 55 $\mu$ C from infinity to the midpoint of one of the 6.0-m long sides of the rectangle?

• A)22 J
• B)16 J
• C)13 J
• D)19 J
• E)8.0 J

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