Two point charges Q1= +40 nC and Q2= -30 nC are 100 mm apart. Point A is midway between the charges and point B is 80 mm from Q1 and 60 mm from Q2. Calculate a. The electric potential at point A b. The electric potential difference VAB c. The work done by the electric field on a charge of +25 nC that moves from A to B

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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.