Question

Are electric field lines straight lines?

Answer 1

Hint : In a uniform electric discipline, the sector lines are direct, parallel, and uniformly spaced. The electrical subject strains can in no way shape closed loops, as strains can in no way begin and quit at the identical price.

Complete Step By Step Answer:
there is great symmetry around a single fee. believe sitting at a positive distance from a single remoted price and searching towards the charge. There may be a sphere made of all the feasible positions you can be sitting at with all factors on the field being the equal distance far from the charge.
 In this situation, you mayn’t tell where you are, simply that you are a positive distance far away from the price: The fee will usually “appear” the same. Additionally, you could turn the rate the other way up or turn it to and for without an alternate: the rate will still constantly “appear” the same. because of this, there can’t be anything of the electrical subject that is going around the field in any direction due to the fact if there has been you can flip the rate or pass around the sector and get special values for the sphere at exclusive points on the field.
This glaringly can’t appear as the rate always “seems” identical and you're nonetheless the equal distance from it so the electrical discipline could have modified without something successfully going on to change it. Having dominated out any contribution to the electric getting in those instructions there is the handiest one course left, perpendicular to the floor of the field, that's radial, i.e., directly out from, (or in in the direction of) the price.

Note :
if you have a tremendous and a bad (same) charge fairly close to one another the sector lines nonetheless go away at the high-quality rate and nevertheless enter the negative. Very near the person costs, the sector strains may be indistinguishable from those of a comparable remote charge.