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QJEEM22Ph2bf6: JEE Main 2022 Physics - Class 12 JEEM22Ph2bf6 Solution: The current flowing through an ac circuit is given by I = 5…

The current flowing through an ac circuit is given by

I = 5 sin(120 π\pi t)A

How long will the current take to reach the peak value starting from zero?

Multiple Choice Options

  • A 160{1 \over {60}} s
  • B 60 s
  • C 1120{1 \over {120}} s
  • D 1240{1 \over {240}} s

Step-by-Step Verified Solution

ω=120π\omega = 120\pi

⇒T=160sec⁡\Rightarrow T = {1 \over {60}}\sec

The current will take its peak value in T4{T \over 4} time

So t=T4t = {T \over 4}

=1240s= {1 \over {240}}s

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