For example, a battery that is rated for mAH can provide 1. It is then quite easy to determine that higher current ratings would last a lot longer when used in the same device. Summary: 1.
Volt is the unit that measures voltage while Amps is the unit for current 2. Power sources are often labeled by how many volts it has while you can only get the number of amps when you apply the power source to a circuit 4.
Most batteries have a fixed voltage but their amperage varies with higher amperage batteries lasting longer. Cite APA 7 , l. Difference Between Volt and Amp. Difference Between Similar Terms and Objects.
MLA 8 , lanceben. Name required. Email required. Please note: comment moderation is enabled and may delay your comment. The impulse purchase can mislead you, leaving you with a battery that completes fewer charge cycles than you would have expected or that takes much longer than expected.
The answer is a small handbook with some key electrical engineering concepts that will help you in choosing batteries and power banks. Power is the first term encountered when talking about electricity.
When the light goes out in the house it happens because you have exceeded the power threshold set by your contract. But what does power mean? Very often it is confused with capacity, another concept that we will see shortly. Actually the power, which is measured in Watts W or kilowatts kW , helps to understand how much energy your device consumes.
The one indicated on the labels of your appliances and devices is the maximum power: it therefore gives you an approximate idea of consumption, which is always less than that figure. In mathematical terms it is the product of Voltage and Intensity :.
We could compare it to the pressure exerted by water in a pipe. In order not to damage the battery of your device it is important to keep in mind the maximum voltage indicated by the manufacturer and always use a charger or power bank with the same value.
Usually the output voltage for smartphones is 5V. To return to the hydraulic metaphor, it corresponds to the flow of water passing through the pipe, in relation to its diameter.
If precision on voltage is fundamental, with regards to amperage it is not necessary to be so rigorous. In this analogy, voltage is equated with the steepness, or pitch, of the river, while amperage is equated with the volume of water in the river.
An electrical current with high voltage but very low amperage can be seen as a very narrow, small river flowing nearly vertical, like a tiny trickle of a waterfall. It would have little potential to really hurt you. But a large river with lots of water amperage can drown you even if the speed of flow voltage is relatively slow.
Of the two, amperage is what creates the greatest risk. Different amounts of amperage affect the human body in different ways. The following list explains some of the most common effects of electrical shock at various amperage levels, according to the U. To understand the amounts involved, a milliampere mA is one-thousandth of an ampere or amp.
A standard household circuit that supplies your outlets and switches carries 15 or 20 amps 15, or 20, mA. This gives you an idea of just how much danger there is in the home wiring system we take for granted, where wires carry 15, or 20, mA. The best way to prevent electrical shock is to follow standard safety procedures for all electrical work.
Here are some of the most important basic safety rules:. Zemaitis, Michael R. Electrical Injuries. Basic Electrical Safety.
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