Topic explanation

Standard explanation

Mutual inductance is the phenomenon in which a changing current in one circuit induces an emf in a nearby coupled circuit.

Key points

• ε₂=−M(dI₁/dt)
• henry
• Factors: Consider two nearby coils. A changing current `I₁` in coil 1 produces changing magnetic flux. Part
• Applications: Mutual induction is central to transformer action and inductive coupling.
• Changing current in one coil can induce emf in another.

Labelled diagram