srija
Member level 1
I am connecting a 5Volts from the battery to the Red LED. This LED actually needs 2.2V and 20mA. The battery is producing 1A current. does this LED bear that much amount of current??????
Follow along with the video below to see how to install our site as a web app on your home screen.
Note: This feature may not be available in some browsers.
thanking u very much
---------- Post added at 10:47 ---------- Previous post was at 10:37 ----------
I am trying for a simple circuit using a LED,Switch and power source(+5V & 1A). I need to glow the LED whenever the switch is pressed. I am using SPST push type switch. My circuit design is like I am connecting the +5V to one end of the SPST and the other diagonal end of SPST switch to the Anode terminal of the LED. The cathode terminal of the LED is Connected to the ground of the Power source. The LED needs 2.2volts and 20mA current.
My question is, is there any need of other components mainly resistor???
Because i don't know how much current and voltage the SPST switch passes when i press it. If it passes more than the Requirement of LED, then if i place resistor before the LED wont that resistor reduces the current??? because the supply is 1A, how that 1A is getting reduced?
My last question why the series connection of elements have same current throughout the closed loop?
I am very sorry if my question is confusing...........Thanking you in advance