- #1
sachi
- 75
- 1
We have to find the capacitance and inductance of a pair of cylindrical conductors of radius r and at a distance d b away from each other. I get the following expressions
C = 2Pi*epsilon0/ln(b/a)
L = Mu0/2Pi *ln(b/a)
We now have a cylindrical conductor a distance d above an infinite conducting plane. We are supposed to get the following expressions using the method of images:
C = Pi*epsilon0/ln(2d/r)
L = Mu0/Pi * ln(2d/r)
I can understand why the b goes to 2 d, but I can't see why we miss the factor of 2 from the numerator of C and the denominator of L.
thanks very much
C = 2Pi*epsilon0/ln(b/a)
L = Mu0/2Pi *ln(b/a)
We now have a cylindrical conductor a distance d above an infinite conducting plane. We are supposed to get the following expressions using the method of images:
C = Pi*epsilon0/ln(2d/r)
L = Mu0/Pi * ln(2d/r)
I can understand why the b goes to 2 d, but I can't see why we miss the factor of 2 from the numerator of C and the denominator of L.
thanks very much