point charge q1 = -3.2 μC is located at the origin of a co-ordinate system. Another point charge q2 = 7.3 μC is located along the x-axis at a distance x2 = 6.4 cm from q1. a) Charge q2 is now displaced a distance y2 = 3.6 cm in the positive y-direction. What is the new value for the x-component of the force that q1 exerts on q2? b) A third point charge q3 is now positioned halfway between q1 and q2. The net force on q2 now has a magnitude of F2,net = 13 N and points away from q1 and q3. What is the value (sign and magnitude) of the charge q3?

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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.