The voltage supplied by an AC source is

PHYSICS · Single correct · A Level · Physics · Fields and their consequences · Fields and their consequences

Problem

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}

(b)

183\,\text{V}

(c)

155\,\text{V}

(d)

220\,\text{V}