Physics
Name the device used to transform 12 V a.c. to 200 V a.c. Name the principle on which it works.
Related Questions
For what purpose are the transformers used? On which type of current do transformers work?
State two factors on which the magnitude of an induced e.m.f. in the secondary coil of a transformer depends.
Name the coil of which the wire is thicker in a (i) step up, (ii) step down transformer. Give reason to your answer.
The output current of a transformer in which the voltage is stepped down is usually higher than the input current. Explain why.