Electric Circuits
The charge of an electron is

 - 1.602 × 10 - 19 Coulombs.
 - 1.672 × 10 - 27 Coulombs.
 - 1.675 × 10 - 27 Coulombs.
 - 9.109 × 10 - 31 Coulombs.

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

  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.
 When ac completes the (+)ve half, is called a cycle.

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