Question

A device consisting of two coil using electomagnetic effects to change the amount of current and voltage in a circuit is called a(n)

A inductor
B transformer
C transducer
D electromagnet

Answer 1

it will be TRANSFORMER

Step-by-step explanation:

TRANSFORMERS have step up (to increase voltage) and step down (to decrease the voltage ) . these features are acheived bcoz transformer has two coils arranged together.

Answer 2

B transformer