Edexcel Electric fields
Since V=Ed, E should be the gradient. But why is it A if the gradient is negative?
Original post by cultivated-exhib
Since V=Ed, E should be the gradient. But why is it A if the gradient is negative?
"Because" you do not understand the fundamental relationship between electric field (strength) and electric potential which is required by the specification:
"know and understand the relation between electric field and electric potential".
The relation between electric field and electric potential is:
electric field strength at a point is equal to the negative potential gradient at that point.
You can "see" derivation in the following links:
https://farside.ph.utexas.edu/teaching/316/lectures/node34.html
https://phys.libretexts.org/Bookshelves/University_Physics/Book%3A_Introductory_Physics_-_Building_Models_to_Describe_Our_World_(Martin_Neary_Rinaldo_and_Woodman)/18%3A_Electric_potential/18.02%3A_Electric_potential
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