📢Get 20 RRB Group-D mocks for just Rs. 149. Enroll now
FREE CONTENT
COURSES
AP
TS
Which of the following devices helps to maintain a potential difference across a conductor?
Galvanometer
Ammeter
Voltmeter
A cell or battery
Create a FREE account and get:
Ask doubts feature is currently unavailable for you. You can reach us at support@cracku.in for any further details/doubts.
Boost your Prep!
