In this problem, use Ampre's law to show that the magnetic field inside a long solenoid is
Question:
(a) Write down B||Δl for each of the four sides of the path, in terms of B, a, (the short side) and b (the long side).
(b) Sum these to form the circulation.
(c) Now, to find the current cutting through the path: each loop carries the same current I, and some number N of loops cut through the path, so the total current is NI. Rewrite N in terms of the number of turns per unit length (n) and the physical dimensions of the path.
(d) Solve for B.
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Related Book For
Physics
ISBN: 978-0077339685
2nd edition
Authors: Alan Giambattista, Betty Richardson, Robert Richardson
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