Which characteristic determines susceptibility to inductive fields in a telecom circuit?

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Multiple Choice

Which characteristic determines susceptibility to inductive fields in a telecom circuit?

Inductive fields couple to a circuit based on how much magnetic flux can link with the conductors carrying current. The shield around the cable, and its grounding, provide a low-impedance path for the induced currents and help keep the shield at a stable potential. This shunts much of the external changing magnetic flux away from the signal path, reducing the induced voltage that appears on the conductors. In short, the effectiveness of shielding and grounding directly limits how strongly inductive fields affect the telecom circuit. Length of the circuit can influence exposure—the larger the loop area, the more coupling can occur—but shielding is the primary factor that determines susceptibility. Cable color and ambient temperature don’t affect inductive coupling in this context.

Inductive fields couple to a circuit based on how much magnetic flux can link with the conductors carrying current. The shield around the cable, and its grounding, provide a low-impedance path for the induced currents and help keep the shield at a stable potential. This shunts much of the external changing magnetic flux away from the signal path, reducing the induced voltage that appears on the conductors. In short, the effectiveness of shielding and grounding directly limits how strongly inductive fields affect the telecom circuit.

Length of the circuit can influence exposure—the larger the loop area, the more coupling can occur—but shielding is the primary factor that determines susceptibility. Cable color and ambient temperature don’t affect inductive coupling in this context.

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