Question 178: AC fundamentals

Question

The current flowing through an ac circuit is given by
I = 5 sin(120$$\pi$$t)A
How long will the current take to reach the peak value starting from zero?

Accepted Answer

$$\omega  = 120\pi $$
$$ \Rightarrow T = {1 \over {60}}\sec $$
The current will take its peak value in $${T \over 4}$$ time
So $$t = {T \over 4}$$
$$ = {1 \over {240}}s$$

Answer

$${1 \over {60}}$$ s

Answer

60 s

Answer

$${1 \over {120}}$$ s

Answer

$${1 \over {240}}$$ s

AC fundamentals

The current flowing through an ac circuit is given by I = 5 sin(120$\pi$t)A How long will the current take to reach the peak value starting from zero?

Choose the correct answer: