Answer to Question #185550 in Physics for roben

Question #185550

In the area of the point charge q, we place a 0.2  μC  – charge so that a force of 5x10 -5  N applied on it due to the charge q. Find the electric field produced by this unknown charge q?  


1
Expert's answer
2021-04-28T09:55:51-0400

By definition, the electric field strength at some point is the force exerted per unit positive electric charge at that point. Thus, if the charge qq apply the force F=5×105NF = 5\times 10^{-5}N to the q2=0.2μC=0.2×106Cq_2 = 0.2\mu C = 0.2\times 10^{-6}C, it would apply the following force to the unit charge:


E=Fq2=5×105N0.2×106C=250N/CE = \dfrac{F}{q_2} = \dfrac{5\times 10^{-5}N}{0.2\times 10^{-6}C} = 250N/C

Answer. 250 N/C.


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