Physics - EMI/AC Question with Solution | TestHub

PhysicsEMI/ACAC current and voltageEasy2 minPYQ_2022

PhysicsEasysingle choice

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

Options:

Answer:

Solution:

If initial value of current is zero, then it will take $\frac{T}{4}$ time to reach the peak value, where $T =$ time period.

As we know, $ω = 120 π$

Therefore,

$t = \frac{T}{4} = \frac{\frac{2 π}{ω}}{4}$ $= \frac{π}{2 ω} = \frac{π}{2 \times 120 π} = \frac{1}{240} s$

Stream:JEESubject:PhysicsTopic:EMI/ACSubtopic:AC current and voltage

⏱ 2mℹ️ Source: PYQ_2022

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