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In order that current should flow without causing excessive heating or voltage drop, the relay contacts should

  • In order that current should flow without causing excessive heating or voltage drop, the relay contacts should have low contact resistance, be clean and smooth, be of sufficient size and proper shape.
  • When relay contacts are closed, they should conduct current with low resistance to avoid excessive heating and voltage drop.
  • This requires the contacts to be clean and smooth, with sufficient contact pressure to ensure good electrical contact.
  • Over time, the contacts can become dirty or pitted, which increases contact resistance and can cause voltage drop and heating.
  • The contacts should also be of sufficient size and proper shape to carry the rated current without excessive heating.
  • This means that the contacts should be designed to handle the specific current and voltage requirements of the circuit, and should be properly rated for the application.