Question

An ac current is given by i = 200sin 100πt it will acheive a value of 100 A after how many seconds

Answer 1

Explanation:

100=200sin(100πt) Assuming I given in equation is in Amp

=> sin(100πt)=1/2

=>100πt = 30°,150°.. and so on.

Current will become 100A for first time when

100πt = 30° = π/6 => t = 1/600 s assuming t given in equation is seconds.