Science, asked by enrique2, 1 year ago

why is the direction of the current in an electric motor reversed after every half round

Answers

Answered by divyanshichouksey
4
The two parts of a split ring in a d.c. motor act as commutator to reverse the direction of current in the coil. Thus, whenever the coil comes in vertical position, the direction of current through the coil reverses and the coil continues to rotate in the same direction.

sultan16: nic answer
saka82411: Hey it is a.c current and not d.c current
enrique2: thnx
divyanshichouksey: Its dc motor not ac
sultan16: yah i was also thinking
Answered by saka82411
1
Hi friend,

The direction of the current changes every half round because of its alternating nature.

As the current has a sinosoidal wave forms ,the phase difference changes for every half rotation with respect to the direction.

When it is parallel the end is maximum and when it is perpendicular the emf becomes zero.

The maximum emf is

e=- NBA (omega).

Hope you got a little idea.
Similar questions