Suppose a current is given by the equation I $=1\mathrm{.}80$sin$210$t$,$ where I is in am$-$

peres and t in seconds,

$($a$)$ What is the frequency?

$($b$)$ What is the rms value of the current?

$($c$)$ If this is the current through a $24\mathrm{.}0$ resistor, write the equation that de$-$

scribes the voltage as a function of time ANS: $33$Hz$,1\mathrm{.}27$A$,43\mathrm{.}2$sin$(210$t$)$V