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Armature Current of Shunt DC Motor given Voltage Formula

GoArmature Current of Shunt DC Motor given Torque Formula

GoArmature Current of Shunt DC Motor given Input Power Formula

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Armature Current DC motor is defined as the armature current developed in an electrical dc motor due to the rotation of rotor. Check FAQs

I a = \frac{V sp - E b}{R a}

I_a - Armature Current?V_sp - Supply Voltage?E_b - Back EMF?R_a - Armature Resistance?

Armature Current of Shunt DC Motor given Voltage Example

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Here is how the Armature Current of Shunt DC Motor given Voltage equation looks like with Values.

Here is how the Armature Current of Shunt DC Motor given Voltage equation looks like with Units.

Here is how the Armature Current of Shunt DC Motor given Voltage equation looks like.

3.7037 = \frac{239 - 231}{2.16}

3.7037A = \frac{239V - 231V}{2.16Ω}

3.7037 = \frac{239 - 231}{2.16}

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Armature Current of Shunt DC Motor given Voltage Solution

Follow our step by step solution on how to calculate Armature Current of Shunt DC Motor given Voltage?

FIRST Step Consider the formula

I a = \frac{V sp - E b}{R a}

Next Step Substitute values of Variables

∴

I a = \frac{239V - 231V}{2.16Ω}

Next Step Prepare to Evaluate

∴

I a = \frac{239 - 231}{2.16}

Next Step Evaluate

∴

I a = 3.7037037037037A

LAST Step Rounding Answer

∴

I a = 3.7037A

Armature Current of Shunt DC Motor given Voltage Formula Elements

Variables

Armature Current

Armature Current DC motor is defined as the armature current developed in an electrical dc motor due to the rotation of rotor.

Symbol: I_a

Measurement: Electric CurrentUnit: A

Note: Value can be positive or negative.

Formulas to find Armature Current

Supply Voltage

Supply Voltage is the input voltage being fed to the dc motor circuit. Supply voltage refers to the electrical voltage provided to an electrical device or system, such as an electric motor.

Symbol: V_sp

Measurement: Electric PotentialUnit: V

Note: Value should be greater than 0.

Formulas to find Supply Voltage

Back EMF

The Back emf opposes the current which causes it in any dc machine. Back emf refers to the voltage that is generated in an inductor or a coil of wire when the current flowing through it changes.

Symbol: E_b

Measurement: Electric PotentialUnit: V

Note: Value can be positive or negative.

Formulas to find Back EMF

Armature Resistance

The Armature Resistance is the ohmic resistance of the copper winding wires plus the brush resistance in an electrical dc motor.

Symbol: R_a

Measurement: Electric ResistanceUnit: Ω

Note: Value should be greater than 0.

Formulas to find Armature Resistance

Other Formulas to find Armature Current

Go Armature Current of Shunt DC Motor given Torque

I a = \frac{τ}{K f \cdot Φ}

Go Armature Current of Shunt DC Motor given Input Power

I a = \frac{P in}{V sp}

Other formulas in Current category

Go Field Current of DC Shunt Motor

I f = \frac{V sp}{R sh}

How to Evaluate Armature Current of Shunt DC Motor given Voltage?

Armature Current of Shunt DC Motor given Voltage evaluator uses Armature Current = (Supply Voltage-Back EMF)/Armature Resistance to evaluate the Armature Current, The Armature Current of Shunt DC Motor given Voltage formula is defined as the current that flows into the armature winding of the shunt DC motor. Armature Current is denoted by I_a symbol.

How to evaluate Armature Current of Shunt DC Motor given Voltage using this online evaluator? To use this online evaluator for Armature Current of Shunt DC Motor given Voltage, enter Supply Voltage (V_sp), Back EMF (E_b) & Armature Resistance (R_a) and hit the calculate button.

FAQs on Armature Current of Shunt DC Motor given Voltage

What is the formula to find Armature Current of Shunt DC Motor given Voltage?

The formula of Armature Current of Shunt DC Motor given Voltage is expressed as Armature Current = (Supply Voltage-Back EMF)/Armature Resistance. Here is an example- 3.240741 = (239-231)/2.16.

How to calculate Armature Current of Shunt DC Motor given Voltage?

With Supply Voltage (V_sp), Back EMF (E_b) & Armature Resistance (R_a) we can find Armature Current of Shunt DC Motor given Voltage using the formula - Armature Current = (Supply Voltage-Back EMF)/Armature Resistance.

What are the other ways to Calculate Armature Current?

Here are the different ways to Calculate Armature Current-

Armature Current=Torque/(Constant of Machine Construction*Magnetic Flux)
Armature Current=Input Power/Supply Voltage

Can the Armature Current of Shunt DC Motor given Voltage be negative?

Yes, the Armature Current of Shunt DC Motor given Voltage, measured in Electric Current can be negative.

Which unit is used to measure Armature Current of Shunt DC Motor given Voltage?

Armature Current of Shunt DC Motor given Voltage is usually measured using the Ampere[A] for Electric Current. Milliampere[A], Microampere[A], Centiampere[A] are the few other units in which Armature Current of Shunt DC Motor given Voltage can be measured.

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