# Ohm's Law Calculator

The Ohm's Law Calculator will calculate the:

1. Current flowing in a part of an electrical circuit (around a circuit component)
2. Current flowing in the main branch of the whole circuit
 🖹 Normal View🗖 Full Page View Calculator Precision (Decimal Places)0123456789101112131415 Resistance of the circuit component (R) Ω Resistance of conducting wire (Rw) Ω Resistance of battery (r) Ω Potential difference across the circuit component (ΔV) V Electromotive force of the source (ε) V
Current in the specific part of circuit calculation The current flowing in a part of an electrical circuit (around a circuit component) is A [Amps] The current flowing in the main branch of a circuit is A [Amps] I = ∆V/RI = /I = Itot = ε/R + Rw + rItot = / + + Itot = /Itot = Resistance of the circuit component (R) Ω [Ohm] Resistance of conducting wire (Rw) Ω [Ohm] Resistance of battery (r) Ω [Ohm] Potential difference across the circuit component (ΔV) V [Volt] Electromotive force of the source (ε) V [Volt]

Please note that the formula for each calculation along with detailed calculations are available below. As you enter the specific factors of each ohms law calculation, the Ohms Law Calculator will automatically calculate the results and update the Physics formula elements with each element of the ohms law calculation. You can then email or print this ohms law calculation as required for later use.

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Section 14: Electrostatics

I = ∆V/R

## Current flowing in the main branch of circuit Formula and Calculation

Itot = ε/R + Rw + r

## Electrodynamics Physics Tutorials associated with the Ohms Law Calculator

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

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