Electricity and magnetism

Electrical power

P = IV = I2R = V2/R

P power, I current, V voltage, R resistance

Watch forIn parallel (same V), the smaller resistor uses more power.

Apply it · 2 questions

  1. Which parallel resistor dissipates more power?Electricity, magnetism, and electrochemistry · set 3 · hard
  2. Resistance of a light bulbElectricity, magnetism, and electrochemistry · set 2 · medium