If a capacitor is fully discharged and then connected to a voltage source, what

Practice Questions

Q1
If a capacitor is fully discharged and then connected to a voltage source, what is the initial current through the circuit?
  1. Zero
  2. Maximum
  3. Depends on resistance
  4. Infinite

Questions & Step-by-Step Solutions

If a capacitor is fully discharged and then connected to a voltage source, what is the initial current through the circuit?
  • Step 1: Understand that a capacitor stores electrical energy.
  • Step 2: Recognize that a fully discharged capacitor has no stored energy.
  • Step 3: When connected to a voltage source, the capacitor begins to charge.
  • Step 4: The charging process creates a current in the circuit.
  • Step 5: At the moment the capacitor is connected, it behaves like a short circuit, allowing maximum current to flow.
  • Step 6: As the capacitor charges, the current decreases over time until it reaches zero when fully charged.
  • Capacitor Charging Behavior – When a capacitor is initially connected to a voltage source, it behaves like a short circuit, allowing maximum current to flow until it starts charging.
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