JEE MAIN - Physics (2022 - 27th June Morning Shift - No. 11)
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?
$${1 \over {60}}$$ s
60 s
$${1 \over {120}}$$ s
$${1 \over {240}}$$ s
توضيح
$$\omega = 120\pi $$
$$ \Rightarrow T = {1 \over {60}}\sec $$
The current will take its peak value in $${T \over 4}$$ time
So $$t = {T \over 4}$$
$$ = {1 \over {240}}s$$