The direct current motor is used to convert the electrical energy into mechanical energy. The torque is the turning force with the unit Nm in the SI units. The torque developed in the dc motor changes when the device accelerates from zero to its maximum speed. The current and torque of the motor are increased when more load is induced in the motor. The value of the rotational mechanical power is divided by the value of the angular velocity is the dc motor speed formula.

Where,

P

ω = Angular Velocity

The torque is a force which is excreted as the object rotates. The dc motor speed formula is an effective tool to find the torque of the motor.