difference between current and voltage

I will make a tutorial on how to use a multimeter in the future, better still, buy the multimeter Amazon here, you will get the self explanatory user manual that comes with it. The difference is that … Voltage causes the current to take place. There are mainly two types of currents i.e. But when J.J Thompson discovered that it was electrons that do the work in electronic circuits and they are not positively charged, the science community still continued with Benjamin Franklin’s convention, so, we call this virtual current “conventional current”. Internal Customers vs. DC Current: A DC (Direct Current) has the constant magnitude which doesn’t change its polarity or direction throughout the time. Definitions. It measures the amount of water that goes. It is measured by an ammeter and conversion rate is 1 coulomb. Our website is made possible by displaying online advertisements to our visitors. The equipments used for current and voltage measurement are also mentioned. For example in the circuit below, we can say that potential difference or voltage from point A to point B is 4.5 volts, while the voltage from point A to point C is 9 volts.

EE-Tools, Instruments, Devices, Components & Measurements, Difference Between MCB, MCCB, ELCB & RCD Circuit Breakers, Difference Between Microprocessor and Microcontroller, What is Electricity? All you need to do is set the multimeter to the parameter you want to measure. A Volt is the potential difference which moves one joule of energy per coulomb charge between two points. (AC and DC Voltage). From the diagram above, it looks like current is carried by positive charges moving from the positive end of the battery (shown in red colour) to the negative end (shown in black colour). Hence, we conclude that the work a unit positive charge did in moving from Point B to Point C under the influence of surrounding charges (+q and –q) is called “Voltage” or electrical potential.
Every electrical device you purchase has electrical parameter specifications, amongst them are voltage, current and power. they would not want to come much closer to each other. Voltage is the cause of current (being an effect). 25% Off on Electrical Engineering Shirts. Either it is connected in a series, current be easily flown is not disturbed however it does get disturbed when it is connected in parallel. On the other hand, voltage is the electrical force that drives an electric current between two points.In other words, it is the “energy per unit charge”. There is more to learn about power which we shall discuss after we have treated Resistance and resistors. (Ask your question if you have any in the comment section below).

When water is being spread the flow is the current. In electronics, we take the natural ground or earth which has typically an infinite charge-absorbing ability to be a point with zero charge or current. Up tp 93% Off - Launching Official Electrical Technology Store - Shop Now! A current is the number of electron that passing through the pipe in the water. Electrons are negatively charged and they are charge-carriers in batteries. The symbol for denoting voltage is V and for current its I. Volt – Also known as Voltage or simply “V”.

Voltage can exist without current as it is the cause of flowing charge. Thus, if 10 charges cross and enter side B in 1 second, we have 10 current values.
Required fields are marked *, All about Electrical & Electronics Engineering & Technology. Years back, before electron was discovered; Benjamin Franklin termed any mysterious thing that moves and does work as being positively charged.

Hence, it can serve a good reference point for comparison. When the above situation happens, the unit positive charge just moved from its initial position (point B) to another position (Point C), towards the direction of the negative charge –q. Voltage is the effect of electromotive force (EMF) and represented by the symbol of V. The SI unit of voltage is “volt” which is also denoted by the symbol of “V”. Voltage is same at each point in parallel connection i.e. It is measured by a voltmeter and the conversion unit is 1 joule. The electronic current flow is from negative to positive due to vast amount of negative charge carriers (electronic engineering) while in the conventional current flows from positive to negative (electrical engineering). This is because “current will only move from a region of higher voltage or electrical potential to a region of lower voltage or electrical potential. Related Post: Difference Between Microprocessor and Microcontroller. The difference between Current and voltage is concept that cannot be overemphasized in electronic circuit design.However, to measure either of the two is one thing and to present the values in a comprehensive form is another thing. One volt is the difference of electric positional equal to one ampere of current dissipates one watt of. One volt is the difference of electric positional equal to one ampere of current dissipates one watt of power between two conducting points. Power is the product of voltage and current in a circuit. Therefore, know from here that current which formed from charges can only move from regions of higher electrical potential or voltage to regions of lower electrical potential or voltage. But, bear in mind that electrons flow from the negative end to the positive end of the battery. It's like amount of food required to move our body from a point to another. Voltage is the pressure moving current, and the Chinese refer to voltage as pressure. These charges we talked about while explaining current do influence each other when they come close. when it meet with –q (because unlike charges attract), that force pushing it form +q tends to zero. Voltage is measured in voltmeter and current is measured in ammeter.

Required fields are marked *. The rule is this; current can only flow in the direction indicated by the dark blue arrow and not opposite it. Current is the rate of charge flow (electrons) passing through a point in the circuit caused by the voltage. It is the effect of voltage which makes voltage the cause of current. Same thing happens if they are both negatively charged. Direct voltage can be generated by electrochemical cells and batteries.

Let’s explore these parameters intuitively. Your email address will not be published. Or, the rate of flow of electrons is called current.

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