A positively charged particle with __________________ charge +q and a negatively

Question

A positively charged particle with __________________ charge +q and a negatively charged Y particle with charge -2q are placed along the z axis as drawn to the right. The two particles are equidistant from the origin. The drawing is divided into three regions by the dashed lines. Select the regions where there is a point with zero electric field magnitude (except at infinity). Select One of the Following: (a) Region 1 only. (b) Region 2 only. (c) Region 3 only. (d) Regions 1 and 3. (e) Regions 1 and 2. (f) Regions 2 and 3. (g) Regions 1 2, and 3.

Explanation / Answer

in region1 and region3 the direction of electric fileds prodcucerd by the point charges are in opposite direction .At some particular point these fields will be same in magnitude and cancels.hence net electric filed is zero

In region2 the direction of electric fileds produced by these charges are in same direction..At all points in region2 the individual eletric fileds will add up .....and hence there is no chances for electric filed becomes zero

hence the final answers is d) reigions 1 and 3

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