Electric Circuits
A certain network consists of large number of ideal linear resistances, one of which is designated as R and two constant ideal source. The power consumed by R is P1 when only the first source is active and P2 when only second source is active. In both sources are active simultaneously then the power consumed by R is

 (P1 ± P2 )2.
 P1 ± P2 .
 √P1 ± √P2.
 (√P1 ± √P2)2.

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Electric Circuits
What is called a cycle in case of AC operation ?

 When ac completes the (+)ve half, is called a cycle.
 When an alternating quantity completes the (–)ve cycle, is called a cycle.
 Option A and C both.
  When ac goes through a complete (+)ve to (-)ve, is called a cycle.

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