Notifications
Clear all
Magnetic Effects of Electric Current
1
Posts
2
Users
0
Likes
384
Views
0
31/07/2021 12:22 pm
Topic starter
(a) In a d.c. motor, why must the current to the coil be reversed twice during each rotation?
(b) What device reverses the current?
1 Answer
0
31/07/2021 12:23 pm
(a) The current to the coil must be reversed twice during each rotation so that the coil keeps rotating continuously in the same direction.
(b) Commutator.