Calculate total current from voltage?
Hi, can someone help me with problem 3.4? How do I get 7/2b?
the area is a*b
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Für den Gesamtstrom musst du J über die durchflossene orientierte Querschnittsfläche integrieren. Es gilt:
I = int[A]{ J dA }
Es folgt hier:
I = int[0, a][0, b]{ (3 + y/b)*k0*U/L dydx } = a*k0*(U/L)*{(3 + b/b)²*b*0,5 – (3 + 0/b)²*b*0,5}
–> I = a*k0*(U/L)*(7b)/2
die gesuchte Stromstärke …
The simple formula I = J*A is no longer valid here, since J is not constant over the entire cross-sectional area, as it is determined by a dependence on y. Therefore, the more general formula must be used here.
Thank you very much, I finally understand!