Electric Circuits
The current in a chemical cell is a movement of

  positive and negative ions.
  positive ions only.
 positive hole charges.
  negative ions only.

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Electric Circuits
What is called the instantaneous value of an alternating current?

 The value of peak quantity at any instant.
 The value of peak current at any instant.
 The value of alternating frequency at any instant.
 The value of alternating quantity at any instant.

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