What is the role of the two conducting stationary brushes in a simple electric motor?

  • A
    To rotate the coil
  • B
    To reverse the direction of current
  • C
    To provide a sliding contact with the split rings to conduct current into the coil
  • D
    To increase the magnetic field strength

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Similar Questions

$(a)$ Describe an experiment with a diagram to show that force is exerted on a current-carrying conductor when placed perpendicular in a magnetic field.
$(b)$ How will this force change if the current in the conductor is increased?
$(c)$ Name a device that uses the above principle.

The following diagram shows two straight wires carrying current. Copy the diagram and draw the pattern of lines of force around them and mark their directions.

Mention the shape of the magnetic field lines around a current-carrying straight conductor.

What are magnetic field lines? How is the direction of magnetic field at a point determined? Mention two important properties of magnetic field lines.

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