1. [15 pts) Which ones of the following statements concerning electric force are true? [a] Electric force is originated

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1 15 Pts Which Ones Of The Following Statements Concerning Electric Force Are True A Electric Force Is Originated 1 (275.4 KiB) Viewed 36 times

1. [15 pts) Which ones of the following statements concerning electric force are true? [a] Electric force is originated from atomic charges. Amount of charges is a continued real number i.e. q can be any positive or negative value). [c] The direction of electric force follows "like charges attract" and "unlike charges repel" rules. [d] Electric force equals ma (i.e. mass times acceleration). e] If atomic electrons have no orbital motion, they will fly away due to electric force. [f] Two metal balls have equal but opposite charges. The net charge will be "zero" after they touch. [20 pts] As shown in figure, a positive charge of -3.0 PC is located at point A while another positive charge of -3.0 uC is located at point B. Their separation is 2 m. (a) What is the net electric field right in the middle between point A and B? (b) If a test charge of -2.0 MC is placed at this mid-point, what is the net force exerted on this test charge by the two charges at point A and B? (c) If the charge at point A changes to +3.0 uC, what is the net force direction on the test charge at this mid-point?