6.14 Increasing the Force

Recall that the force on a current-carrying conductor in a magnetic field increases with the strength of the field and with the current.

In the motor effect if you increase either the current in the conductor/wire or the strength of the magnetic field the force of the movement will also increase

Exam style question:
What changes can you make to a simple dc motor to increase the force it can exert? [3]

• Increase the strength of the magnetic field [1]
• Increase the current in the coil [1]
• Increase the number of turns on the coil [1]