Question

In an AC circuit , the current is given by 1= 4 sin(100 $\pi$ +300) ampere. The current becomes maximum first time (after t=0) at t equal to

• A. $\left(1/200\right)sec$
• B. $300sec$
• C. $\left(1/50\right)sec$
• D. $\left(1/300\right)sec$

Answer 1

The correct option is C $\left(1/50\right)sec$

In an AC circuit,

the current= $I=4\sin (100\Pi +300)amp$

The current becomes maximum first time (after $t=0$)

$t=\frac{2\Pi }{T}$

$T=\frac{2\Pi }{2\Pi W}$ $t=2\Pi W$

$=\frac{2}{100}=\frac{1}{50}sec$ .