. A thin plate of infinite area has a charge density of 5 x 10-12 C/m². This plate is at x = 0 m and is perpendicular to the x-axis. The electric permittivity of vacuum is Eo = 8.85 x 10-12 c² /Nm² A. What is the electric field at x = 0.2 m Answer : ... N/C 3. If the electric potential at x = 0 is 50V, what is the electric potential at x = 0.2 m ? Answer : .. V C. How much work is done by the electric field to move an electric charge Q = -2µc and r = (0.3,0.2) m to (0.2, –0.2 ) m? Answer : ... x 10-81

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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.