How would u determine the polarity of 3v and 100ma solarcell if it is not given on cell ?
How would u determine the polarity of 3v and 100ma solarcell if it is not given on cell ?
sorry had something typed in
sorry had something typed in then realised it was wrong and couldnt delete post
if you don’t have a
if you don’t have a multimeter you could set up an LED with appropriate resistor
and use that. it should only light the right way around.