Two charges, -14 C and +5.6 C, are fixed in place and separated by 2.4 m. (a) At

Question

Two charges, -14 C and +5.6 C, are fixed in place and separated by 2.4 m. (a) At what spot along a line through the charges is the net electric field zero? Give the distance of the spot to the positive charge in meters (m). (Hint: The spot does not necessarily lie between the two charges.) (b) What would be the force on a charge of +14 C placed at this spot?

Explanation / Answer

a) Suppose that +5.6 is in the right hand side of -14C : ======> in the right hand side of the +5.6 C charge. ======> 5.6/x^2 = 14/(x+2.4)^2 ======> ==> x = 4.13 m ------------------------------------------------------------------------------------------------------------------------------------------------------------------ b) F = 0

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