How do you calculate current, voltage, and resistance in a circuit?

February 24, 2026Physics

ScanSolve AI Answer

February 24, 2026

Ohm's Law: V = IR, where V = voltage (volts), I = current (amps), R = resistance (ohms). Series circuits: R_total = R1 + R2 + R3 (resistances add). Parallel circuits: 1/R_total = 1/R1 + 1/R2 + 1/R3. Power: P = IV = I²R = V²/R. Example: A 12V battery with 4Ω resistance → I = 12/4 = 3A, P = 12×3 = 36W.

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Quick Answer

Ohm's Law: V = IR, where V = voltage (volts), I = current (amps), R = resistance (ohms).

Asked on February 24, 2026Physics

This physics problem tests your understanding of fundamental physical laws and their applications. The step-by-step solution below breaks down the problem using relevant equations and physical reasoning.

ScanSolve AI AnswerAnswered on February 24, 2026

Ohm's Law: V = IR, where V = voltage (volts), I = current (amps), R = resistance (ohms). Series circuits: R_total = R1 + R2 + R3 (resistances add). Parallel circuits: 1/R_total = 1/R1 + 1/R2 + 1/R3. Power: P = IV = I²R = V²/R. Example: A 12V battery with 4Ω resistance → I = 12/4 = 3A, P = 12×3 = 36W.