Will a six volt motor run on 4.5 volts? Will a 3 volt motor run on 1.5 volts?

Question

Will a six volt motor run on 4.5 volts? Will a 3 volt motor run on 1.5 volts?

Answer 1

maybe, maybe not. It all depends on the starting current the motor needs. A little push may help it running slower on a lower voltage

Answer 2

probably, slowly, if there is no load.

or maybe fairly fast,  depending on the motor.

Answer 3

Yes, but it runs less speed and lower torqe. That is the most simple way to control the speed of motor by vary the supply voltage.