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co_life04
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Thin Rod + Poncual Charge... Find Vb-Va
A thin "rod" of 10 m is located between (0m,4m) and (0m,14m). Its linear density is 50*10^-9C/m. Also, there is a ponctal charge of Q=10*10^-9 located at (-1m,0m).
Given 2 points:
A at (0m,-5m)
B at (0m,0m)
Find Vb-Va.
E=k|Q|/r^2
E*d=V
some integrals...
Okay, this seems like a tricky one, does it not?
I know I could use Vb-Va = Integral of : E*s, possibly with s=5
But then, I would have a Vb-Va for the rod, would I have to also calculate the Vb-Va due to the poncyal charge and then sum these 2? This is what I would have done during an exam, though I'm really not sure it'd be good, would it?
Thanks for any help you can provide... believe me, I,ve tried it a couple of times before posting here.
Homework Statement
A thin "rod" of 10 m is located between (0m,4m) and (0m,14m). Its linear density is 50*10^-9C/m. Also, there is a ponctal charge of Q=10*10^-9 located at (-1m,0m).
Given 2 points:
A at (0m,-5m)
B at (0m,0m)
Find Vb-Va.
Homework Equations
E=k|Q|/r^2
E*d=V
some integrals...
The Attempt at a Solution
Okay, this seems like a tricky one, does it not?
I know I could use Vb-Va = Integral of : E*s, possibly with s=5
But then, I would have a Vb-Va for the rod, would I have to also calculate the Vb-Va due to the poncyal charge and then sum these 2? This is what I would have done during an exam, though I'm really not sure it'd be good, would it?
Thanks for any help you can provide... believe me, I,ve tried it a couple of times before posting here.