Electric field changing formula variables problem

AI Thread Summary
The discussion centers on determining the distance from a point charge where the electric field magnitude doubles. The initial electric field is E at a distance d, and the proposed solution is that the distance for the electric field to reach 2E is d/sqrt(2). The formula used to derive this is E=(k)(q/d^2). Participants confirm that the calculation is correct. The conclusion is that the distance at which the electric field doubles is indeed d/sqrt(2).
kirby2
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If the electric field is E at a distance d from a point charge, its magnitude will be 2E at a distance?

ATTEMPT: i think the answer is d/sqrt(2). i used the formula E=(k)(q/d^2) and used test variables. Is this the right answer?
 
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kirby2 said:
If the electric field is E at a distance d from a point charge, its magnitude will be 2E at a distance?

ATTEMPT: i think the answer is d/sqrt(2). i used the formula E=(k)(q/d^2) and used test variables. Is this the right answer?
Yes. That's the right answer.
 

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