Question

7) In a transformer electrical power is transferred from one circuit to another with out change in ?
a) voltage
b) current
c) frequency
d) turns​

Answer 1

A - voltage........!!!!!!!

Answer 2

Transformer

c) frequency

• The transformer works on the principle of Farady's law of electromagnetic induction. It is used for increasing or decreasing the supply voltage without change in frequency iof the circuit.
• There are basically 3 parts of tranformer namely, an iron core which acts as a magnetic conductor, a primary winding and a secondary winding.
• We use transformers to distribute power at high voltage, to eliminate double wiring, to insulate circuits etc.