Question

Explain what?=???2is the equation for, and what the four symbols in it stand for. (b) [3...

Explain what?=???2is the equation for, and what the four symbols in it stand for. (b) [3 pts.] Give an example of a situation in which you cannot use this equation to (correctly!) calculate E. (c) [3 pts.] Give an example of a situation in which you need to use this equation and something else to calculate the correct E, and say what the other thing is that you need.

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Answer #1

This equation is used to calculate electric field due to point charge. In the equation E refers to electric field Q refers to charge on the particle and r refers to Position vector of point where electric field is to be calculated with the spec to the point charge.

if you got some situation where Charge is not appoint type or is moving then we can't apply Coulomb's law.

In various situations you might need another equation to find the electric field because coulombs law might be too complicated. In those scenario we use Gaus's law

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