Choke coil:

CONCEPT:

Choke coil:

• A choke coil is a device that is used in the electrical circuits to allow DC current to flow through it while blocks AC current from passing.
  • A choke consists of a coil of insulated wire that is wound around a magnetic core.
  • The low electrical resistance allows DC and AC to pass with little power loss but it limits the AC current from passing through it due to its reactance.
  • The choke coil works because it can act as an inductor.
  • When the current passes through will change as AC currents create a magnetic field in the coil that works against the AC current. This is known as inductance and blocks most of the AC current from passing through.
  • This results in the currents that do not change such as DC currents can continue passing through while those currents are blocked by the magnetic field.

EXPLANATION:

• A choke coil is a low resistance inductor coil used to suppress or limit the flow of alternating current without affecting the flow of direct current, as in applications that require conversions of AC to DC. Hence, option 1 is correct.