# Output Current in Transformer Calculator

The Output Current in Transformer Calculator will calculate the:

1. Output current in an ideal transformer
2. Output current in a non-ideal (real) transformer
3. Number of turns in the secondary coil of an ideal transformer when the voltages are known

Calculation parameters: The conducting wire of transformer is uniform and it has the same thickness everywhere; the source supplies AC current.

 🖹 Normal View🗖 Full Page View Calculator Precision (Decimal Places)0123456789101112131415 Input current in the transformer (i1) A Input voltage in the transformer (ΔV1) V Number of turns in the primary coil (N1) Output voltage (ΔV2) V Efficiency of real transformer (e) Power lost in the transformer (Plost) W
Output current in an ideal transformer calculation The output current in an ideal transformer is A [Ampere] The output current in a real transformer is A [Ampere] The number of turns in the secondary coil is i2 (ideal) = i1 × ∆V1/∆V2i2 (ideal) = × /i2 (ideal) = /i2 (ideal) = i2 (real) = Plost/∆V2 (1 - e)i2 (real) = / (1 - )i2 (real) = / × i2 (real) = /i2 (real) = N2 = ∆V2/∆V1 × N1N2 = / × N2 = × N2 = Input current in the transformer (i1) A [Ampere] Input voltage in the transformer (ΔV1) V [Volt] Number of turns in the primary coil (N1) Output voltage (ΔV2) V [Volt] Efficiency of real transformer (e) Power lost in the transformer (Plost) W [Watt]

Please note that the formula for each calculation along with detailed calculations are available below. As you enter the specific factors of each output current in a transformer calculation, the Output Current In A Transformer Calculator will automatically calculate the results and update the Physics formula elements with each element of the output current in a transformer calculation. You can then email or print this output current in a transformer calculation as required for later use.

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## Related Physics Sections with Tutorials

Section 14: Electrostatics

Section 15: Electrodynamics

Section 16: Magnetism

Section 17: Electronics

Section 22: Cosmology

## Output current in an ideal transformer Formula and Calculation

i2 (ideal) = i1 × ∆V1/∆V2

This formula derives from the formula of power of an ideal transformer

i1 × ∆V1 = i2 × ∆V2

## Output current in a real transformer Formula and Calculation

i2 (real) = Plost/∆V2 (1 - e)

This formula derives from

e = Poutput/Poutput + Plost × 100%

## Number of turns in the secondary coil Formula and Calculation

N2 = ∆V2/∆V1 × N1

## Magnetism Physics Tutorials associated with the Output Current In A Transformer Calculator

The following Physics tutorials are provided within the Magnetism section of our Free Physics Tutorials. Each Magnetism tutorial includes detailed Magnetism formula and example of how to calculate and resolve specific Magnetism questions and problems. At the end of each Magnetism tutorial you will find Magnetism revision questions with a hidden answer that reveals when clicked. This allows you to learn about Magnetism and test your knowledge of Physics by answering the test questions on Magnetism.

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