E-Potiential Difference in Uniform Field

AI Thread Summary
The discussion centers on the correct formulation of the equation for electric potential difference, questioning whether it should be Delta V = Ed or Delta V = -Ed. The importance of providing context and clarity in physics questions is emphasized, suggesting that additional information about the specific field and symbols used would be beneficial. An analogy with gravitational potential energy (mgh) is presented, indicating that displacement in the direction of the field decreases potential energy. The conversation highlights the significance of understanding the signs in physics equations. Clarity in communication is essential for effective problem-solving in physics.
IvaNMK
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Hi. I am new, don't close my thread please

My Question is the - sign in front of the equation Delta V = Ed , or Delta V = - Ed, Which one is true?


Delta V = Ed , or Delta V = - Ed ??



The Attempt at a Solution

 
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You are more likely to get an answer if you follow the proforma question layout and give a bit more information, say about what field of Physics you are asking about and the meaning of the symbols.
 
Take mgh as an analogy. Displacement in the direction of the field
decreases the potential (energy).
 
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Thread 'Struggling to understand the concept of this question (ice cube in water optics question)'

TL;DR Summary: I came across this question from a Sri Lankan A-level textbook. Question - An ice cube with a length of 10 cm is immersed in water at 0 °C. An observer observes the ice cube from the water, and it seems to be 7.75 cm long. If the refractive index of water is 4/3, find the height of the ice cube immersed in the water. I could not understand how the apparent height of the ice cube in the water depends on the height of the ice cube immersed in the water. Does anyone have an...
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