In the figure four particles form a square with edge length a = 4.95 x 102 m. The charges are q1 = 94 = 1.88 x 10 15 C and q2 93= q. (a) What is q if the net electrostatic force on particle 1 is zero? (b) Is there any value of q that makes the net electrostatic force on each of the four particles zero? 3

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Electric Charges and Fields

One of the fundamental properties is the electromagnetic property. Charge cannot be destroyed by any process and this contributes formally to the law of charge conservation.