Question

A device is used to transform 12V a.c. to 200V a.c.

(1) What is the name of this device?

(2) Name the principle on which it works.

Answer 1

1. Since the device is being used to step up 12V a.c. to 200V a.c., it is called a step up transformer.

2. A transformer works on the principle of mutual induction.

3. “When an alternating current is passed in the primary coil wound on the soft iron core, an induced emf- is produced in the secondary coil, wound on a soft iron