Basic Electronics #2: Voltage



Hi, I'm Nemeen, Electronics Enthusiast! I have seen a huge decline in electronics hobbyist in pa...

Every one of us has heard of voltage in our life 12v, 5v, 120v, 3.7v...........etc so what does it means lets find it out !

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Step 1: Watch the Video !

If you are lazy and don`t want to read all the stuff you can watch the video Click Here

Step 2: What Is It ?

Basically, voltage is a quantity which pushes the electrons in a circuit and forces them to move in a direction which is nothing but current.

If there is no voltage (0v), electrons will not flow and there will be no current!

Step 3: Example

here I have a setup to measure voltage and current consumed by the fan. Right now there is zero voltage means no current as you can see.

Now I have increased the voltage and there is some current but fan is still not moving let's increase it. As we increase the voltage current starts to increase.

Step 4: Actual Definition

I said voltage pushes the electrons that is just for understanding! the actual definition says

~ It is the difference in electrical potential, per unit of charge

this means voltage can do electrical work here we are moving a fan.

Step 5: Bit Advance ...

We know energy is measured in Joule and voltage can be expressed as J/C and ampere as C/s

If we multiply Voltage and Current we get Power which is J/s which means the amount of energy consumed by the fan per second.

Here if we multiply 12v X 177mA we get 2.124 J/s (W)

Step 6: Thank You !

That's it for today if you like my

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