What is the relationship between electric field E and potential V in a uniform electric field?
Correct Answer: E = -dV/dx
- Step 1: Understand what an electric field (E) is. It is a region around a charged object where other charged objects experience a force.
- Step 2: Understand what electric potential (V) is. It is the potential energy per unit charge at a point in an electric field.
- Step 3: Recognize that in a uniform electric field, the strength of the field is constant throughout the region.
- Step 4: Learn the formula E = -dV/dx. This means that the electric field (E) is related to how the electric potential (V) changes with distance (x).
- Step 5: The negative sign in the formula indicates that the electric field points in the direction where the potential decreases.
- Step 6: Conclude that in a uniform electric field, as you move in the direction of the electric field, the electric potential decreases.
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