Chemical is the answer your looking for.
Answer:
D
Commutator is the answer
Explanation:
The commutator systematically converts the current direction between the rotor and the outer circuit. As the shaft revolves, the commutator converts the course of current in a winding. For a separate armature winding, when a cylinder has reached one-half perfect turn, the winding is now attached so that current passes through it in the reverse of the original direction.
In a liquid, particles are close together but can move in any direction. They won't keep a definite shape like solids do.
The number of particles in 46g of Sodium (Na) atoms are 2.00088735004 mol
