Electric Circuits
A current is said to be alternating when it changes in

 both ‘a’ and ‘b’.
 direction.
 none of these.
 magnitude.

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

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

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