Question

An adopter for mobile phones is an example of
a)step-up transformer
b)step down transformer
c)rectifier
d)b and c

EXPLAIN ​

Answer 1

Answer: d. b and c

Explanation: It is step-down transformer, because the adaptor lowers the supply volatage (about 220V) to the required volatage(about 5V).

It is rectifier because it transforms A.C. supply to D.C.

Answer 2

Explanation:

option B and c is the correct answer❣️❣️❣️❣️