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Question: 1 use amperes law to find the magnetic field outside...

Question details
1. Use Ampere's law to find the magnetic field outside a coaxial cable (r> b), inner radius a, and outer radius b.


2. Find the equivalent inductance of two identical ideal solenoids connected in series if:
l = 0.5,
A = 0.02 m, 2y
N = 300

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