The figure below represents a graph of the electric potential in volts in a region of space versus position x, where the electric field is parallel to the x axis, which is shown in cm. -2 -1 1. 4 5 8 -1 -2 -3 (a) Where is the electric field zero? O at x = +2 cm O at both O at x = +4 cm O at neither (b) What is the electric field at x = +6 cm? Positive values represent electric fields in the +x direction. -66.67 V/m (c) What is the electric field at x = -1 cm? V/m Now consider the figure to represent the electric field (in N/C) instead of potential. (d) What is the potential difference V(+2)-V(-2), the difference in potential between x = +2 cm and x = -2 cm? V (e) What is the potential difference Vg-Vo?

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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.