Electric Circuits
The rms value of the resultant current in a wire which carries a DC current of 10A and a sinusoidal current of peak value 20A is

 22.4A.
 17.3A .
 30A.
 14.14A.

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Electric Circuits
Which of the following characteristics is/are attributed to an ideal independent voltage source?

 both ‘b’ and ‘d’.
 Independent of the magnitude of voltage supplied.
 Independent of the direction of flow of current.
 Independent of magnitude of current supplied..

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