CIRCUIT ANALYSIS_UNIT2B_OHMS LAW

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10 Terms

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Voltage

Amount of energy available to move electrons from one point to another.

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Current

Rate of charge flow in a particular direction.

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Resistance

Opposition to current.

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Ohm's Law

Relates voltage (V), current (I), and resistance (R) stating that V is proportional to I, with R as the constant of proportionality.

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V = I * R

The formula representing Ohm's Law, where V is voltage, I is current, and R is resistance.

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Effect of Increasing Voltage

When voltage increases while resistance is constant, current increases.

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Effect of Decreasing Resistance

When resistance decreases while voltage is constant, current increases.

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Inverse Relationship

As resistance increases, current decreases if voltage is held constant.

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Application of Ohm’s Law

Can be used to calculate current, voltage, or resistance in circuits.

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Ammeter

Device used to measure current in a circuit.