Question

Which changes in an electric motor will make the motor stronger? Check all that apply.

Answer 1

To strengthen an electric motor, increase the number of coils, enhance the magnetic field's strength, and optimize the commutation process.

Step-by-step explanation:

To make an electric motor stronger, several changes can be implemented. Increasing the number of coils in the motor will increase the torque, as the magnetic force exerted on each coil contributes to the overall twisting force on the motor's shaft. Enhancing the strength of the magnetic field within the motor, either by using stronger magnets or by increasing the current that produces the magnetic field, can also lead to a more powerful motor. Finally, ensuring the efficiency of the commutation process - the timing of the current's reversal to maintain continuous torque - is also crucial for motor strength. Factors such as the precise adjustment of commutators and brushes can minimize energy loss and improve performance.

Answer 2

To make the motor turn faster we can:
(a) increase the current
(b) use stronger magnets
(c) push the magnets closer to the coil
(d) put an iron centre piece into the coil
(e) adding more sets of coils