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Mutual inductance is a phenomenon in which a changing current in one circuit induces a current in another nearby circuit. It is a measure of the ability of one circuit to influence the current in the other circuit.
Mutual inductance is calculated using the formula M = k * √(L1 * L2), where M is the mutual inductance, k is the coupling coefficient, and L1 and L2 are the self-inductances of the two circuits.
Mutual inductance is measured in henries (H), the same unit as inductance. This represents the ratio of voltage to current change in the secondary circuit for a given change in current in the primary circuit.
Mutual inductance can cause unwanted coupling between circuits, leading to interference and distortion. However, it can also be used intentionally in devices such as transformers and inductive sensors to transfer energy or information between circuits.
No, mutual inductance is always a positive value as it represents the physical coupling between circuits. However, it can have a negative impact on circuit performance if not properly managed.