Q. 3 A4.0( 4 Votes )

The current in the secondary coil of a transformer is 1A and that in the primary is 0.5 A.

What type of a transformer is this?

Answer :

The equation used to work out the power for the primary coil and the secondary coil of a transformer is:

P = V × I


where:


P is the power in watts, W


V is the potential difference in volts, V


I is the current in amperes (amps), A


Because the current is larger in the secondary coil of the transformer is larger as compared to that in primary coil.


This means the voltage in the secondary coil must be smaller in order to maintain constant power. Hence, the transformer which results in low voltage is called a step-down transformer.


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