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Field Coil Voltage Formula

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The field coil voltage refers to the voltage applied to the field winding or field coil of a rotating machine, such as a generator or motor. Check FAQs

E f = I f \cdot R f

E_f - Field Coil Voltage?I_f - Field Current?R_f - Field Resistance?

Field Coil Voltage Example

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Here is how the Field Coil Voltage equation looks like with Values.

Here is how the Field Coil Voltage equation looks like with Units.

Here is how the Field Coil Voltage equation looks like.

42.4983 = 83.33 \cdot 0.51

42.4983V = 83.33A \cdot 0.51Ω

42.4983 = 83.33 \cdot 0.51

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Field Coil Voltage Solution

Follow our step by step solution on how to calculate Field Coil Voltage?

FIRST Step Consider the formula

E f = I f \cdot R f

Next Step Substitute values of Variables

∴

E f = 83.33A \cdot 0.51Ω

Next Step Prepare to Evaluate

∴

E f = 83.33 \cdot 0.51

LAST Step Evaluate

∴

E f = 42.4983V

Field Coil Voltage Formula Elements

Variables

Field Coil Voltage

The field coil voltage refers to the voltage applied to the field winding or field coil of a rotating machine, such as a generator or motor.

Symbol: E_f

Measurement: Electric PotentialUnit: V

Note: Value should be greater than 0.

Formulas to find Field Coil Voltage

Field Current

Field current determines the strength of the magnetic field that induces the voltage in the armature winding.

Symbol: I_f

Measurement: Electric CurrentUnit: A

Note: Value should be greater than 0.

Formulas to find Field Current

Field Resistance

Field resistance refers to the electrical resistance of the field winding or field coil in a machine such as a generator or motor.

Symbol: R_f

Measurement: Electric ResistanceUnit: Ω

Note: Value should be greater than 0.

Formulas to find Field Resistance

Other formulas in Electrical Parameters category

Go Specific Electric Loading

q av = \frac{I a \cdot Z}{π \cdot n || \cdot D a}

Go Specific Electric Loading using Output Coefficient AC

q av = \frac{C o(ac) \cdot 1000}{11 \cdot B av \cdot K w}

Go Winding Factor using Output Coefficient AC

K w = \frac{C o(ac) \cdot 1000}{11 \cdot B av \cdot q av}

Go Output Power of Synchronous Machine

P o = C o(ac) \cdot 1000 \cdot {D a}^{2} \cdot L a \cdot N s

How to Evaluate Field Coil Voltage?

Field Coil Voltage evaluator uses Field Coil Voltage = Field Current*Field Resistance to evaluate the Field Coil Voltage, Field coil voltage is the product of field current and resistance of each field coil at 75 °C. It depicts the voltage across each field coil. The field coil voltage formula is used to calculate the voltage required for the field coil of an electrical machine, such as a generator or motor. The field coil is responsible for creating the magnetic field necessary for the operation of the machine. The formula can be derived from the desired magnetic field strength and the design parameters of the machine. Field Coil Voltage is denoted by E_f symbol.

How to evaluate Field Coil Voltage using this online evaluator? To use this online evaluator for Field Coil Voltage, enter Field Current (I_f) & Field Resistance (R_f) and hit the calculate button.

FAQs on Field Coil Voltage

What is the formula to find Field Coil Voltage?

The formula of Field Coil Voltage is expressed as Field Coil Voltage = Field Current*Field Resistance. Here is an example- 42.4983 = 83.33*0.51.

How to calculate Field Coil Voltage?

With Field Current (I_f) & Field Resistance (R_f) we can find Field Coil Voltage using the formula - Field Coil Voltage = Field Current*Field Resistance.

Can the Field Coil Voltage be negative?

No, the Field Coil Voltage, measured in Electric Potential cannot be negative.

Which unit is used to measure Field Coil Voltage?

Field Coil Voltage is usually measured using the Volt[V] for Electric Potential. Millivolt[V], Microvolt[V], Nanovolt[V] are the few other units in which Field Coil Voltage can be measured.

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Field Coil Voltage Formula

Field Coil Voltage Example

Field Coil Voltage Solution

Field Coil Voltage Formula Elements

Other formulas in Electrical Parameters category

How to Evaluate Field Coil Voltage?

FAQs on Field Coil Voltage

Variable Name