ohm's law

Ohm's law

Equation (4.2) is known as Ohm’s law in honor of Georg Simon Ohm (Fig. 4.1). The law clearly reveals that for a fixed resistance, the greater the voltage (or pressure) across a resistor, the more the current, and the more the resistance for the same voltage, the less the current. In other words, the current is proportional to the applied voltage and inversely proportional to the resistance. By simple mathematical manipulations, the voltage and resistance can be found in terms of the other two quantities:

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