Electro Magnetic Induction And Alternating Currents Question 83

Question: In an ac circuit I = 100 sin 200 pt. The time required for the current to achieve its peak value will be [DPMT 2003]

Options:

A) $ \frac{1}{100}sec $

B) $ \frac{1}{200}sec $

C) $ \frac{1}{300}sec $

D) $ \frac{1}{400}sec $

Show Answer

Answer:

Correct Answer: D

Solution:

The current takes $ \frac{T}{4} $ sec to reach the peak value. In the given question $ \frac{2\pi }{T}=200\pi \Rightarrow T=\frac{1}{100}sec $
$ \therefore $ Time to reach the peak value $ =\frac{1}{400}sec $



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