Question

In a step-down transformer the secondary coil is made of thick copper coil.

Explain
(2 marks)​

Answer 1

When a transformer is in operation, there are ac currents in primary and secondary coils. ... This is the most important for the high current winding (the secondary coil of a step-down transformer). Thick copper wire is used for this winding, because thick wire of low resistivity has a low resistance.

Answer 2

In a step-up transformer, the secondary coil is made of same wire as the primary coil but it is rolled with the presence of the insulated which never conduct the opposite current to the coil.

Hence it function property without meeting any fire and other problem.

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