Electronics - Voltage and Current - Discussion

Conventional current is due to the migration of holes (i.e flow of protons). Hole is nothing but proton, hole forms due to the lose of electron. Conventional current flows from +ve to -ve direction. It means holes reached first than electron to destination.

Hole is NOT proton. It is deficiency or absence of electron. So when any hole is moving from point A to any other point B it means an electron is moving from point B to point A. I mean it is wrong saying which current flows first or second.

Proton flow in the direction of conventional current.

Above @Ksk had the exact explanation of electron-hole theory, hole flow direction is considered as conventional flow direction and protons are not holes, holes are the vacant spaces left due to the motion of electrons. So, conventional flow is exactly opposite to the flow of electrons.

Conventional current flow when no power supply, after that electronic current flow.

Guys its just simple listen. Assume a simple circuit with a battery connected to a small bulb (load). As everyone know we connect +ve terminal to one side and the -ve to other side. We know that in a battery charge stored in cathode starts moving towards anode. So what we do is we connect battery +ve and and battery -ve with a wire btw the wire we have a load (bulb) the load utilises as much charge it wants and it glows.

The charge will be flowing from cathode to anode (since +v and -v attracts) meanwhile the load connected in between utilises the charge to glow. This is what happens when we explain the circuit. The charge (electron) flow here called conventional current (it is assumed just to explain the circuit). But actually current direction is from -ve to +ve because electron is -ve charge and its obvious it is attracted to +ve. So current always flows from -ve to positive.

Since the circuit analysis were made 100 years ago at that time scientist actually thought electricity was some kind of invisible fluid which flows of higher region to lower region just like water (so they gave higher region as +ve and lower region as -ve) but later it was discovered that electrons flows from -ve to +ve. So finally the thing is current direction is -ve to +v but while analysing circuit we say its +v to -v and hence the conventional current. I hope everyone are clear now.

Conventional Current direction is always Opposite direction of actual electrons flow i.e. in the direction of flow of Protons. So I thought my answer is "Protons move in conventional current flow".

How is the conventional current came first?

Explain please.

Conventional current is also the current which flows even if you don't connect battery (a very little small amount).

Generally, current is a flow of electrons. Then how the flow of protons is considered as a conventional current. Please explain.