All Questions
4 questions
5
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Clarification Regarding a Possible Typo in David J. Griffiths' Introduction to Electrodynamics
Question:
I am currently reading Introduction to Electrodynamics by David J. Griffiths, and I’ve encountered a point of confusion in Section 2.4 on page 91.
Why is $W=\int_a^b\textbf{F}\cdot d\textbf{...
0
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1
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47
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How to know what force to plug in for work?
Suppose I have a positive charge $+Q$ at some point, and I want to see how much work I need to do to bring a negative charge $-q$ to a distance $r$ from that point. The direct calculation is done via ...
- 163
0
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1
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Vector $d\vec{r}$ in calculating work
Could anyone tell me what and where is the origin and vector dr that prof. Walter Lewin used to calculate work here?
With origin I mean the coordinate origin to define vector r and dr.
Why vector dr ...
- 81
0
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1
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588
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The formula used to calculate electrical potential energy
Sorry for the ugly picture but it makes my question more understandable.
The $\Delta V$ from $A$ to $B$ is calculated by$$\int_A^B E \, \mathrm{d}r$$ where $r$ is the distance between $A$ and $B$. The ...
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