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Ohm's Law is a fundamental principle in physics and electrical engineering that defines the relationship between voltage, current, and resistance in an electrical circuit. It states that the current (I) flowing through a conductor is directly proportional to the voltage (V) across it and inversely proportional to the resistance (R) of the conductor. This relationship is expressed by the formula: V=IR. This means if the voltage increases, the current also increases, provided resistance stays the same. Likewise, increasing resistance will decrease the current if voltage remains constant. Ohm's Law is essential for analyzing and designing electrical circuits.