How do you calculate current, voltage, and resistance in a circuit?
Physics
ScanSolve AI Answer
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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