Electro Magnetic Induction And Alternating Currents Question 169
Question: The equation of alternating current is :
$ I=50\sqrt{2},\sin ,400\pi t,amp $ . Then the frequency and root mean square of current are respectively
Options:
A) $ 200Hz,50amp $
B) $ 400\pi ,Hz,50\sqrt{2},amp $
C) $ 200,Hz,,50\sqrt{2}amp $
D) $ 50Hz,200amp $
Show Answer
Answer:
Correct Answer: A
Solution:
- $ 2\pi nt=400\pi t $
$ \therefore n=200 $ $ I_{0}=50\sqrt{2},amp $ r.m.s. current $ =I_{0}/\sqrt{2}=50,amp $
