Question

Complete the diagram with commutator, etc. for the flow of current in the coil.

Answer 1

Hint: To solve this question, we need to think of the components that are needed for the flow of current in the coil. The components that are needed are armature, brush on both sides of the commutator and the commutator itself. These components are to be arranged between the two magnets.

Complete answer:
To complete the diagram, we will have to mention the armature, brush and commutator.

A commutator is a device that is used in many generators, motors, etc. as an electrical switch that keeps on rotating. Due to this rotation, the direction of the current gets overturned in the circuit and the rotor after each half rotation of the coil. Another component is the brushes which are placed next to the commutator and are made up of suppressed carbon. The role of the carbon brushes is to generate a current between the stationary wires and the parts that are moving. The armature is a piece of iron core that is rectangular in shape and is wrapped by a coil that is made up of copper which makes it experience a torque due to which it rotates because of the magnetic field acting on it which is generated by the electricity that passes through it.

Note: The magnetic field is never parallel or antiparallel to the direction of current because due to the flow of current in the coil, the coil experiences a perpendicular force which can be said to be the cross product of the magnetic field flowing through the circuit and the current flowing in the coil.