What is the energy stored in a capacitor of capacitance 10μF charged to a potent

Practice Questions

Q1
What is the energy stored in a capacitor of capacitance 10μF charged to a potential difference of 50V?
  1. 0.0125 J
  2. 0.025 J
  3. 0.05 J
  4. 0.1 J

Questions & Step-by-Step Solutions

What is the energy stored in a capacitor of capacitance 10μF charged to a potential difference of 50V?
  • Step 1: Identify the formula for energy stored in a capacitor, which is U = 1/2 * C * V².
  • Step 2: Identify the values given in the problem: capacitance (C) = 10μF and potential difference (V) = 50V.
  • Step 3: Convert the capacitance from microfarads to farads: 10μF = 10 × 10^-6 F.
  • Step 4: Substitute the values into the formula: U = 1/2 * (10 × 10^-6 F) * (50 V)².
  • Step 5: Calculate (50 V)², which is 2500 V².
  • Step 6: Multiply 10 × 10^-6 F by 2500 V² to get 0.025 J.
  • Step 7: Multiply by 1/2: 0.025 J * 1/2 = 0.0125 J.
  • Step 8: Conclude that the energy stored in the capacitor is 0.0125 J.
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