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Why inductance of a coaxial cable is expected to increase when the radius of the outer conductor is increased?
Wiki User
∙ 10y ago
Because there is more room in the cable for the magnetic field to form. The magnetic flux density is set by the current in the cable, and with a bigger space that flux density produces more actual flux. The inductance is the flux divided by the current, so a wider cable has more inductance.
But if the inner conductor is also increased in size by the same ratio, the effect is negated and the inductance is the same as before.
Wiki User
∙ 10y ago
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