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**DC motor magnetic field flux (EMF) calculator** - step by step calculation, formula & solved example problem to determine the strength of the electro-magnetic field flux generated by an electrical DC motor. Field winding constant K_{f} & field current I_{f} are the key elements in this calculation.

The below mathematical formula is used in this calculator to find the EMF generated by an electrical DC motor

The below step by step solved example problem may helpful for users to understand how the input values are being used in such calculations to find the EMF generated by the DC motor.

**Example Problem**

Find the electro magnetic field strength (φ) of a DC motor whose field constant K_{f} = 125 & field current I_{f} = 0.50 Amps

**Solution**

The given data

K_{f} = 125

I_{f} = 0.50 amps

__Step by step calculation__

Formula to find φ = K_{f} x I_{f}

substitute the values in the formula

= 125 x 0.50

**φ = 62.5 weber**

In the field of *electrical engineering*, there may be many situations user may need to calculate the strength of the magnetic flux generated by the magnetic field of a DC motor. The above formula, step by step calculation & solved example problem may be useful for users to understand how the values are being used in the formula to find the EMF, however, when it comes to online for quick calculations, this magnetic field flux calculator helps the user to perform & verify such calculations as quick as possible.