Question

Which device uses AC current to operate?

Answer 1

Answer

Correct option is B that is Desktop computer

Explanation

Option A

This option is not correct because in a Locomotive train steam, diesel or batteries are used.

Option B

It is Correct option because in desktop a transformer is there which uses AC current. Most of us have desktop and we used AC current to operate it we don't have any other option to operate a desktop except AC current

Option C

This is not correct option because in  a car we used petrol, deisel, gas or  DC batteries.

Option D

Option D is not correct option because to operate portable media player we can use both  alternating current or batteries

Option

This is not correct option because in  flashlight we uses DC batteries

Hope this answer will help you

Answer 2

B. Desktop computer

A Locomotive train runs on steam, diesel, or batteries

a car either gas or electric uses DC batteries

portable media player can use AC or batteries

A flashlight uses DC batteries

The computer actually has a transformer built into it which uses AC current