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Point charge - q and 5q are fixed at a point (1,0)and (25,0) respectively in the xy plane at which of the following points is the electric field directed towards the origin?? 1) (-5,0) 2) (5,0) 3) (28,0) 4) (3,4)

Point charge  - q and 5q are fixed at a point (1,0)and (25,0) respectively in the xy plane at which of the following points is the electric field directed towards the origin?? 
1)  (-5,0)   2)  (5,0)  3)   (28,0)  4)   (3,4)  

Grade:11

1 Answers

Eshan
askIITians Faculty 2095 Points
4 years ago
Dear student,

At point (-5,0),

Electric field=\dfrac{k(q)}{6^2}-\dfrac{k(5q)}{30^2}>0
Hence electric field is towards the origin.

Also at point (5,0), electric field due to either charge will be toward origin only. Hence this is also correct.

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