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2 point charges 4q and 1q are separated by 30 cm. At what point electric field is zero

2 point charges 4q and 1q are separated by 30 cm. At what point electric field is zero

Grade:12

1 Answers

Arun
25763 Points
3 years ago

let p be a point between the 2 charges at a distance of x and (30-x).when electric field becomes zero,

k*4q/x2=k*q/(30-x)2

 

on calculation,x=20 cm

 

hence at 20cm electric field is zero

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