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## Homework Statement

What will the pointer of electrodynamic ammeter show (its natural frequency of oscillation is 5 Hz), if its input is energized by current:

a) i (t) = 1.5 + 4 sin (3146 t)

b) i (t) = 1.5 + 4 sin (2 t)

Ammeter has a range of 6 A and the scale has 100 divisions.

## Homework Equations

## The Attempt at a Solution

[/B]My solution is 25 but I don't understand the difference between a) (where the frequency is 500 Hz) and b) (0.318 Hz).