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9). Three charges, + 33 uC, - 33 uC and + 33 uC are placed at...

9). Three charges, + 33 uC, - 33 uC and + 33 uC are placed at A (0,5cm), B (5cm,0), C(-5cm,0). Calculate the potential energy of the whole system of charges.

10). Two charges, one is at A with - 20.64 nC and other is at B with +9* 20.64 nC are seperated by 1 m. Find the distance AC in cm for which electric POTENTIAL at point C is zero. Point C is located on line AB.

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