A sinusoidally varying potential difference has ampli$-$

tude $170$ V$.($i$)$ What is its minimum instantaneous value?

$($a$)170$ V $($b$)120$ V $($c$)0($d$)2120$ V $($e$)2170$ V $($ii$)$ What is

its average value? $($iii$)$ What is its rms value? Choo