Question

Please answer the pic.

Answer 1

armature ---- helps in rotation
brushes------- connects rings with circuit
split rings----- changes the direction after half rotation

Answer 2

armature , must carry current , can be on either the rotor or the stator of the electric machine .

split ring , it reverses the direction of current flowing through the coil .

brushes , are kept in place by brush holder , it conduct electricity to the individual segments as they rotate from brush to brush .