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Key Takeaways of Mutual and Self Inductance. Mutual inductance refers to the phenomenon where the change in current flow in one coil induces a voltage in an adjacent coil. It occurs when two coils are placed close to each other and have a magnetic field that interacts with each other.
17.1 Example : self inductance of two parallel wires. Calculate the self inductance of two parallel wires,radius a, separation to the centres d, and of length `. From Ampere’s law, outside each wire : B = 0I. 2 r. Radial area element `. dr. Magnetic flux : a 2 = R B ` dr.
Mutual inductance arises when a current in one circuit produces a changing magnetic field that induces an emf in another circuit. But can the magnetic field affect the current in the original circuit that produced the field? The answer is yes, and this is the phenomenon called self-inductance.
Mutual Inductance. Here, there are two coils placed near each other. The first coil will make turns and carry the current which results in the magnetic field. As both the coils nearly close to each other, the magnetic field through one coil will all pass through the other coil.
Example \(\PageIndex{1}\): Mutual Inductance. Figure \(\PageIndex{3}\) shows a coil of \(N_2\) turns and radius \(R_2\) surrounding a long solenoid of length \(l_1\), radius \(R_1\), and \(N_1\) turns. What is the mutual inductance of the two coils?
This resource includes the following topics: mutual inductance, self-inductance, energy stored in magnetic fields, RL circuits, LC oscillations, The RLC series circuit, summary, appendix 1: general solutions for the RLC series circuit, appendix 2: stresses transmitted by magnetic fields, problem-solving strategies, solved problems, conceptual ...
1H 1. A. Named for Joseph Henry. Section 32.1. Self-Inductance, consequence of Faraday’s law. An induced emf is always proportional to the time rate of change of the current. The emf is proportional to the flux, which is proportional to the field and the field is proportional to the current. = −.
