Measuring Amperes Solved/Closed

Question

Hello, I have a multimeter with which I can measure amperes, but when I connect it to a battery, it shows -1.
Could you tell me how to measure the number of amperes that a battery can produce, please?
Thank you in advance. Configuration: Windows Vista
Opera 9.63

Charenton3 · Accepted Answer

Well, let's start from scratch. We can liken an electrical wire, a conductor, to a water pipe. When the switch is closed, it's like a faucet; nothing flows. When you open the faucet, or the switch, current or water flows. There are two variables that describe what happens: electric voltage (measured in Volts), which is equivalent to the water pressure in the pipe. The current (measured in Amperes) is the amount of water (expressed in liters/minute, for example) that flows through the pipe. Intuitively, we can feel that there is a relationship between the two: the higher the pressure, the more water flows; in electricity, this is Ohm's law: current (Amperes) is proportional to voltage (Volts).
In the case of a single battery, you can only measure the voltage (or potential difference) between the + and - terminals since it doesn't supply any current (thankfully). There's just pressure behind the tap; nothing flows in the pipe (because there is no pipe), so there's no current or amperes.

® Dennis ® · Answer

The ammeter should be connected in series to measure amperes, while the voltmeter is connected in parallel. -- There are no problems in computing, only solutions ^_^.

robertb_36 · Answer

Branch your multimeter to COM and 10A, set it to measure amperes in direct current (DC...), and then you will test your battery; it will be short-circuited, but with small batteries, there will be no danger. Test it long enough to read your value, no more than 5 seconds, and you will get the number of amperes.
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ac 3 · Answer

http://physiquecollege.free.fr/_private/quatrieme/electricite/multimetre.htm  -- Before asking a question .... Have I done the necessary research? If I don’t know how to do it... I say it!

klasa · Answer

It works! (but is it possible for a battery to have 21 amperes?)

® Dennis ® · Answer

Isn't it rather milli-amperes (I mean, seriously, 21 amps for a battery ........... ) -- There are no problems in IT, only solutions ^_^.

klasa · Answer

So should I set the cursor to 20m or 10A?

Charenton3 · Answer

A battery only provides amps when it is connected to something (a lamp, an LED, etc.). On its own, you can measure its VOLTAGE (in VOLTS). Basically, we have 1.5 to 1.6V for a new or almost new battery. When connecting an ammeter to a battery, we measure the current flowing through the ammeter, which is pointless and says nothing about the battery (it only depends on the internal resistance of the ammeter).

® Dennis ® · Answer

Amperes are the intensity.  To read. -- There are no problems in computer science, only solutions ^_^.

Measuring Amperes

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