Electric Circuits
The mass of a proton is

 1.609 × 10 - 31 Kg.
 1.675 × 10 - 27 Kg.
 1.602 × 10 - 19 Kg.
 1.672 × 10 - 27 Kg.

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

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