# Need help understanding the basics of electronics

I would like to state that I'm a beginner in learning electronics by reading my first book on electronics I'm lost and would like some help. I even included an image that would hopefully help my case.

By learning series and parallel circuit. What confuses me if we have a battery plus terminal and minus and one light bulb wire coming from positive terminal of battery connects to positive terminal on light bulb and negative terminal of battery connects to negative terminal of light bulb. Why does in series circuit if we have for example 3 lights bulbs and one battery wire connects from negative terminal of light bulb to positive terminal of another light bulb I don't get it. In parallel circuit wire coming from battery connects to positive terminal of battery and negative to negative even if we have 3 light bulbs. But in series circuit light bulbs are connected with wire from negative terminal of battery to positive terminal of battery. I found out its because of light bulbs have no polarity. But LED lights have polarity and they are still connected the same way. I don't get it. To makes things easier I put some markings on image.

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• because the negative side of the LED is connected to the negative side of the battery? Commented Apr 27, 2023 at 18:53
• @user253751 has it right. That said, you're probably lucky, because hooking it up the other way probably would have burned out your LEDs, or at least one of them, with too much current. Commented Apr 27, 2023 at 20:18
• @user253751 The long LED leg is always positive. you can write + on the short leg, but that doesn't make it positive. Commented Apr 27, 2023 at 21:16
• Your LED circuit would just fry the LEDs. Commented Apr 28, 2023 at 3:42
• The circuit just needs a series resistor, unless the LEDs have one built-in. Commented Apr 28, 2023 at 3:52