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Four particles with charges 9muC, 10muC,...

Four particles with charges `9muC, 10muC, 15muC and 20muC` are placed at the corners of a square with side 10 cm as shown in the figure. Calculate the work done by an external agent in assembling the charges at their locations.

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To calculate the work done by an external agent in assembling four charges at the corners of a square, we can follow these steps: ### Given Data: - Charges: \( Q_1 = 9 \, \mu C = 9 \times 10^{-6} \, C \) - Charges: \( Q_2 = 10 \, \mu C = 10 \times 10^{-6} \, C \) - Charges: \( Q_3 = 15 \, \mu C = 15 \times 10^{-6} \, C \) - Charges: \( Q_4 = 20 \, \mu C = 20 \times 10^{-6} \, C \) - Side of the square: \( a = 10 \, cm = 0.1 \, m \) ...
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