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Calculators: Resistance Calculations |
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Please note that although the following calculators have been carefully tested, we assume no guarantee for correct results. Overview of the calculators and converters NEW: Our calculators at your website - free of charge We allow you to integrate special versions of our converters and calculators into your homepage and into forums and blogs. This service is free of charge. Calculators for your website - free of charge  The equation R=V/I is used to define the ohmic (electrical) resistance, and it is called Ohm's Law. The unit for the electrical resistance is the Ohm (Ω), and its formula symbol is R (lat. resis = resist). The calculation basis for this resistance calculator: The formula it is based on is R=V/I (Ohm's Law). The 2nd decimal point in the result is rounded up. The electrical conductivity is the reciprocal value of the electrical resistance. Its formula sign is G, its measuring unit is S (Siemens). Some calculations can be more elegantly achieved with conductance as the quantity for the resistance. The calculation basis for this conductivity converter: The formula this is based on is R=1/G. The 5th decimal point in the result is rounded up. The calculation basis for the above calculator: The formulas it is based on are P=V2/R, respectively W=I2Rt, and apply for direct current. The 2nd decimal point in the result is rounded up. Error messages Overflow appears when the value to be displayed is too large for the display field. The other displayed values remain valid. NaN (Not a Number) appears when an invalid number was entered in one of the input fields, most commonly an entry containing an incorrect decimal character (e.g. point and not comma), a letter or a thousands separator. |
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