Category: Physics mcqs

An uncharged capacitor having capacitance C is connected across a battery of emf V. Now the capacitor is disconnected and then reconnected across the same battery but with reversed polarity.Then which of the statements is incorrect ?

  • After reconnecting, charge delivered by the battery is 2CV.
  • After reconnecting, no energy is supplied by battery.
  • After reconnecting, whole of the energy supplied by the battery is converted into heat.
  • After reconnecting, thermal energy produced in the circuit will be equal to 2CV²
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