In an electromagnetic system with two magnetically coupled coils, the instantaneous mutually induced emf in the secondary coil is given by e2 = -M(di1/dt), where M is the mutual inductance. Which of the following statements correctly interprets the physical significance of M?

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Physics · Electromagnetism

Verified Solution4 OptionsUpdated: October 2026👁️1 View

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Correct answer

M is the ratio of flux linkage in one coil to the current in the other coil, assuming all flux is mutually linked.

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Answer 1

M represents the ratio of flux linkage in one coil to the rate of change of current in the same coil.

Answer 2

M denotes the energy stored per unit flux in a magnetic field.

Answer 3

M is the ratio of flux linkage in one coil to the current in the other coil, assuming all flux is mutually linked.

Answer 4

M varies inversely with the number of turns of both coils.

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