chapter21-part2 - CPS question Three point charges lie at...

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1 Three point charges lie at the vertices of an equilateral triangle as shown. All three charges have the same magnitude, but Charges #1 and #2 are positive (+ q ) and Charge #3 is negative (– q ). The net electric force that Charges #2 and #3 exert on Charge #1 is in A. the + x -direction. B. the – x -direction. C. the + y -direction. D. the –y- direction. E. none of the above CPS question Charge #1 Charge #2 Charge #3 + q + q q x y Three point charges lie at the vertices of an equilateral triangle as shown. All three charges have the same magnitude, but Charge #1 is positive (+ q ) and Charges #2 and #3 are negative (– q ). The net electric force that Charges #2 and #3 exert on Charge #1 is in A. the + x -direction. B. the – x -direction. C. the + y -direction. D. the –y- direction. E. none of the above CPS question Charge #1 Charge #2 Charge #3 + q q q x y
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2 Electric field 0 q F E = We can define the “electric field” as the electric force per unit of charge E q F 0 = The force exerted on an arbitrary point charge by a field is: q 0
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