Electric Circuits
Two resistances R1 and R2 give combined resistances 4.5 Ω and 1 Ω when they are connected in series and parallel respectively. What would be the values of these resistances?

 3 Ω and 9 Ω.
  3 Ω and 6 Ω.
  1.5 Ω and 3 Ω.
 6 Ω and 9 Ω.

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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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