Three resistors of 25 Ω, 30 Ω and an unknown resistance R are connected in parallel and the combination is connected to a 17 V source. If the total current delivered by the source is 1.7 A, determine the following: A. The value of R. B. The current in each resistor. C. Which resistor dissipates the highest power? What conclusion can be made?

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Microscopic view of current

In physics, the term current is expressed as the rate of flow of electric charges across the area per unit time (I=q/t). It propagates along in the direction of the motion of positive charges. When the current is caused by the motion of electrons, the direction of the current is opposite to the flow.