Question

Name a device that helps to maintain a potential difference across a conductor.​

Answer 1

A source of electricity such as cell, battery, power supply, etc. helps to maintain a potential difference across a conductor.

Answer 2

$\huge\green{Hello!!}$

Battery is a device which can help to maintain a potential difference across a conductor.

Hope it may help you!!

Thanks N Regards

$\green{Aaravxxx}$