Bob F Posted February 23, 2009 Report Posted February 23, 2009 Ohm's Law states: Voltage equals Current times Resistance. Current equals Voltage divided by Resistance. Resistance equals Voltage divided by Current. Current is proportional to Voltage. Current is inversely proportional to Resistance. All of the above. None of the above. Quote
Bob F Posted March 2, 2009 Author Report Posted March 2, 2009 Some varied answers on this one. The correct answer is "all of the above." OHM'S LAW FORMULA When voltage is applied to an electrical circuit, current flows in the circuit. The following special relationship exists among the voltage, current and resistance within the circuit: the size of the current that flows in a circuit varies in proportion to the voltage which is applied to the circuit, and in inverse proportion to the resistance through which it must pass. This relationship is called Ohm's law, and can be expressed as follows: E = I R Voltage = Current x Resistance E Voltage applied to the circuit, in volts (V) I Current flowing in the circuit, in amperes (A) R Resistance in the circuit, in ohms OHM'S LAW SYMBOL SHORTCUT Mathematical formulas can be difficult for many who don't use them regularly. Most people can remember a picture easier than a mathematical formula. By using the Ohms law symbol below, anyone can remember the correct formula to use. By knowing any two values you can figure out the third. Simply put your finger over the portion of the symbol you are trying to figure out and you have your formula. Quote
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