What law relates voltage, current, and resistance in a circuit?

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Multiple Choice

What law relates voltage, current, and resistance in a circuit?

Voltage, current, and resistance are linked by Ohm's Law. It states that the current flowing through a conductor is equal to the voltage across it divided by the resistance (I = V/R), or that the voltage across it equals the current times the resistance (V = IR). This means that for a fixed resistance, increasing the voltage increases the current proportionally; for a fixed voltage, increasing resistance decreases the current. Example: if 12 volts are applied to a 6 ohm resistor, the current is I = 12/6 = 2 amperes. Other laws describe different things: Kirchhoff's Current Law concerns the sum of currents at a junction; Faraday's Law relates changing magnetic flux to induced voltage; Coulomb's Law describes the force between electric charges.

Voltage, current, and resistance are linked by Ohm's Law. It states that the current flowing through a conductor is equal to the voltage across it divided by the resistance (I = V/R), or that the voltage across it equals the current times the resistance (V = IR). This means that for a fixed resistance, increasing the voltage increases the current proportionally; for a fixed voltage, increasing resistance decreases the current.

Example: if 12 volts are applied to a 6 ohm resistor, the current is I = 12/6 = 2 amperes.

Other laws describe different things: Kirchhoff's Current Law concerns the sum of currents at a junction; Faraday's Law relates changing magnetic flux to induced voltage; Coulomb's Law describes the force between electric charges.

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