Two particles with positive charges q1 and q2 are separated by a distance s. Along the line connecting the two charges, at what distance from the charge q1 is the total electric field from the two charges zero

The distance is  

Explanation:

From the question we are told that

   The positive charges is  

   The distance of separation is  

Generally at the point where the electric field is zero  would be a point where

The  electric field due to =  The  electric field due to

Generally the electric field due to is mathematically represented as

Since we are taking our reference from then the electric field due to is mathematically represented as

So

work: w = fd (given)

work done by chet   =50*1 = 50 j

work done by mika =40*2 = 80 j

work done by sara =30*1.5 = 45 j

work done by bill =60*0.5 = 30 j

students in order from the greatest amount of work done to the least is mika> chet> sara> bill

hence option (b) is correct.

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