A negative point charge of 1.5 nC and a positive point charge of 4 nC are placed 10 cm apart. Calculate the magnitude of the force (in µN) acting on one of these charges. (Take the value of Coulomb's law constant to be 9 x 109 N m2/C2)

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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.