Electric current devides among two resistors connected in parallel in such a way that the joule heat developed becomes minimum. Using this fact, obtain the equation of division of current.
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In parallel combination of two resistances the equivalent resistance is smaller than the minimum value of resistance in the combination. Hence, the heat produced in the combination is minimum.
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Calculate the voltage drop of a current across a resistor using Ohm's law. ... by a resistor in a DC circuit is to use Joule's law, P = IV, where P is electric power.
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