Question

How do we know positive & negative ends of this cell??​

Answer 1

Answer:

$the \: upper \: part \: of \: cell \\ (two \: button \: like \: ) \: is \\ positive \\ the \: lower \: part \: is \\ negative \\ \\ you \: can \: also \: see \: the \: positive( + ) \: and \: \\ negative( - ) \: sign \: in \: cell$

Answer 2

Answer:

In a hi-watt battery, the broader point is negative and the small point is positive.

Hi-watt battery is a combination of two battery one facing positive one negative.