A solid metal ball of radius 1.2 cm is located near a hollow plastic ball of radius 1.7 cm bearing a uniformly distributed charge of -7 nC on its outer surface. The distance between the centers of the balls is 9 cm. (a) Click the edge of the metal ball that has an excess of positive charges. Metal Plastic (b) What is the electric field at the center of the metal ball due just to the charges on its surface? Assume the +x axis is the right, the +y axis is up and the +z axis is out. > N/C <

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A:

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A:

Electric field

A physical field present around an electrically charged particle that exerts a force on all other charged particles is called an electric field. The charged particles present in the field either repel or attract. From electric charges or time-varying magnetic fields, the electric field originates. One of the manifestations of electromagnetic force which is one of the four fundamental forces present in nature are the electric fields and magnetic fields.