Definition

Noun: - A coil in which an electrical current is induced by a changing magnetic field from a nearby primary coil: A "secondary coil" is a component in an electrical device, typically a transformer or induction coil. It does not have a direct power source. Instead, an alternating current in a separate "primary coil" creates a changing magnetic field, which then induces a voltage and current in the secondary coil.

Usage Examples

• Noun:
  • The voltage in the secondary coil depends on the ratio of turns between it and the primary coil.
  • The transformer's secondary coil is connected to the circuit that powers the device.
  • When the switch is opened, a high voltage is induced in the secondary coil of the ignition coil.

Advanced Usage

• "The secondary coil is wound around...": This describes the physical construction of the coil.
  • In a typical transformer, the secondary coil is wound around the same iron core as the primary coil.
• "Output of the secondary coil": Refers to the electrical power (voltage and current) produced by the coil.
  • The secondary coil's output is rectified to produce direct current.

Variants and Related Words

• Secondary winding (n): A complete synonym for "secondary coil."
  • The transformer failed due to a short circuit in the secondary winding.
• Primary coil (n): The input coil that carries the alternating current which creates the inducing magnetic field.
  • The primary coil is connected to the mains electricity supply.
• Induction coil (n): A device that uses the principle of electromagnetic induction, containing both a primary and a secondary coil.
  • An induction coil can generate very high voltages from a low-voltage DC source.

Synonyms

• Secondary winding: The electrical engineering term for the same component.
• Output coil: Emphasizes its function as the source of output power in a transformer.

Related Phrases

• To be inductively coupled to: Describes the relationship between the primary and secondary coils.
  • The secondary coil is inductively coupled to the primary coil through the magnetic core.

Noun

1. coil such that current is induced in it by passing a current through the primary coil