Physics

Problem

The voltage supplied by an AC source is

v=311\sin(314t)\,\text{V}

, where

t

is in seconds. What is the instantaneous voltage at

t = 2.0\,\text{ms}

? a)

252\,\text{V}

183\,\text{V}

155\,\text{V}

220\,\text{V}