# How do you find the voltage of a DC motor?

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A simple model for a DC motor is V=R∗i+e, where V is the terminal voltage, R is the motor resistance, and e is the back-emf voltage.

## How do you find the voltage of a motor?

Voltage Equation Of Series Motor: Armature Induced Voltage & Torque: Speed of Series Motor: Input & Output Power.

Eb = V – IaRa ….. ( 2)

1. V is the supply voltage.
2. Ia is the Armature current.
3. Ra is thr Armature resistance.

## How do you test a 12 volt motor with a multimeter?

Touch the red, negative (-) wire of the voltmeter to the red, negative terminal of the battery. At the same time, touch the black, positive (+) wire of the voltmeter to the black, positive terminal of the battery. Read the voltmeter’s display. A fully-charged car battery should read 12.6 volts at room temperature.

## How can you tell if a motor is AC or DC?

Look for the stator core construction and rotor. If there is no commutator, then it is a AC motor. If there is a commutator and brushes, it may be either a DC motor or an AC commutator motor (Universal motor). … Solid stator core with commutator implies a DC motor.

## What is the maximum voltage you can use on a 12v DC motor?

12 V motor will work well with 12 V battery, and will be fine up to the maximum voltage the battery goes when fully charged. This means it will work well up to 14 V.

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## How much electricity can a 12v DC motor generate?

12v DC motor with maximum 1.5A capacity can generate 18W of power. 12v DC motor with maximum 3A capacity can generate 36W of power.

## What is the output of a motor?

In an electric motor, the mechanical power is defined as the speed times the torque. Mechanical power is typically defined as kilowatts (kW) or horsepower (hp) with one watt equaling one joule per second or one Newton-Meter per second. Horsepower is the work done per unit of time. 