What is the energy stored in a capacitor with capacitance C charged to a voltage

Practice Questions

Q1
What is the energy stored in a capacitor with capacitance C charged to a voltage V?
  1. 1/2 CV²
  2. CV
  3. 1/2 V²/C
  4. C²V

Questions & Step-by-Step Solutions

What is the energy stored in a capacitor with capacitance C charged to a voltage V?
  • Step 1: Understand that a capacitor is a device that stores electrical energy.
  • Step 2: Know that the capacitance (C) is a measure of how much charge a capacitor can store per unit voltage.
  • Step 3: Recognize that voltage (V) is the electrical potential difference across the capacitor.
  • Step 4: Learn the formula for the energy (U) stored in a capacitor: U = 1/2 CV².
  • Step 5: Identify that in this formula, you multiply the capacitance (C) by the square of the voltage (V²) and then divide by 2.
  • Step 6: Use the formula to calculate the energy stored by plugging in the values for C and V.
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