Machine-translated by Google. Questions are authored in English.
Top

Discussion

Two capacitors, one charged and one uncharged, are connected in parallel. The total stored energy afterwards is

  • A.less than before, energy having been dissipated in the connection
  • B.the same as before, charge being conserved
  • C.greater than before, the combined capacitance being larger
  • D.zero, the charge having redistributed evenly

Answer: A

Charge is conserved but energy is not: the redistribution current flows through the resistance of the connecting wires and radiates or heats them. The loss is independent of that resistance, exactly as in charging a capacitor from a source.

No comment is present. Be the first to comment.
Loading…

Post your comment

Please log in or register to post a comment.