To calculate the total electric field caused by a charge distribution it is help

Question

To calculate the total electric field caused by a charge distribution it is helpful to: (A) imagine the charge distribution to be one giant point charge. (B) imagine the charge distribution to be made up of many point charges. (C) look for symmetries in the charge distribution. (D) note that the total electric field is an additive sum of the electric field vectors from individual point charges. (E) note that the total electric field is an additive sum of the electric field magnitudes from individual point charges.

Explanation / Answer

To calculate the total electric field caused by a charge distribution it is helpful to

c ) look for the symmetries in the charge distribution. there are linear, surface and volume charge distribution available. by knowing the symmerty we can easily calculate the electric field by using Guass's law. which makes our life easier.

here are the reason, other options are not helpful to calculateife electric field caused by charge distribution.

a & b) charge distribution is not centered at one point or discrete points.

d & e) Coulomb's law and Superposition principle is useful for discrete charges, but for distribution of charges, it is difficult to use them . so we need charge density concept to make calculation easier.

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