An electric charge of 1.20 X 10-^3c is fixed at each corner of a rectangle 30.0 cm wide and 40 cm long. (k = 9 x 10^9N • m2 /C2)  a) What is the magnitude and direction of the electric force on each charge? b) What is the electric field and electric potential at the centre?

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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.