What is the formula for the energy stored in a capacitor?

Practice Questions

Q1
What is the formula for the energy stored in a capacitor?
  1. U = 1/2 C V^2
  2. U = C V
  3. U = C V^2
  4. U = 1/2 Q V

Questions & Step-by-Step Solutions

What is the formula for the energy stored in a capacitor?
  • Step 1: Understand that a capacitor is a device that stores electrical energy.
  • Step 2: Know that the energy stored in a capacitor depends on two things: its capacitance (C) and the voltage (V) across it.
  • Step 3: The formula to calculate the energy (U) stored in a capacitor is U = 1/2 C V^2.
  • Step 4: In this formula, 'C' represents the capacitance in farads, and 'V' represents the voltage in volts.
  • Step 5: To find the energy, you first square the voltage (V^2), then multiply that by the capacitance (C), and finally multiply the result by 1/2.
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