Question

a
science
experiment, John
saw an electrical
device which is used
very commonly at
home to
protect
electrical appliances
from very high
current. What device
did John see?​

Answer 1

Answer:

voltmeter

Explanation:

john seee voltmeter device

Answer 2

Explanation:

Alternating current (AC) is an electric currentwhich periodically reverses direction and changes its magnitude continuously with time in contrast to direct current (DC) which flows only in one direction.

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