Two charges of q1 = 1.9 µC and q2 = −2.9 µC are d = 0.46 m apart at two vertices of an equilateral triangle as in the figure below.  (a) What is the electric potential due to the 1.9-µC charge at the third vertex, point P? (in volts)  (b) What is the electric potential due to the −2.9-µC charge at P? (in volts)  (c) Find the total electric potential at P. (in volts)  (d) What is the work required to move a 4.0-µC charge from infinity to P? (in joules)

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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.