Amp(-i) is - Vidyadip

MCQ

$\operatorname{Amp}(-i)$ is

A
$\frac{\pi}{2}$
✓
$-\frac{\pi}{2}$
C
$\frac{\pi}{3}$
D
$\frac{\pi}{4}$

✓

Answer

Correct option: B.

$-\frac{\pi}{2}$

(B)
Since $- i =0+(-1) i$, it is represented by $(0,-1)$ which lies on negative Y -axis.
$\therefore \quad$ amp $(- i )=-\frac{\pi}{2}$

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