To solve the problem, we need to determine both the RMS value of the current and the frequency from the given equation:

Here's how we do it step by step:

RMS Current Calculation:

For a sinusoidal current of the form , the RMS (root-mean-square) current is given by:

In our case, the amplitude A. Plugging into the formula:

Frequency Calculation:

The argument of the sine function is . In the general form is the angular frequency which relates to the frequency by the equation:

Given , we can solve for :

With these calculations, we find that the RMS current is 100 A and the frequency is 50 Hz.