In j-notation, used in phasor representation, the imaginary unit j2 represents ____.

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RRB JE EE 22 Apr 2025 Shift 1 CBT 2 Official Paper
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  1. -1
  2. √-1
  3. 1
  4. 0

Answer (Detailed Solution Below)

Option 1 : -1
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Concept

The complex plane is represented as:

qImage6811ecc021ea5513278d21d7

In phasor representation, the imaginary unit j2 represents a rotation of 180 degrees (or π radians) counterclockwise in the complex plane.

It's equivalent to -1, as j = √-1 and 

j2 = (√-1)= -1

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