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# How does an alternator produce different amps?

## Answer

###### Wiki User

###### November 01, 2007 6:04PM

It depends on the load and the voltage. In an automobile, a battery will typically have a voltage of about 12 Volts. If the engine is not running and you turn on the lights, the lights will start drawing current from the battery and the voltage will drop by a volt or so, depending on how strong a charge the battery has.

An alternator will produce in the neighborhood of 15 Volts. If it is trying to push current into a system with a fully charged battery, it will only be able to push a few amps. If the voltage in the battery drops, the alternator will be able to push more amps. A completely dead battery will draw the most current (amps).

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### How many amps is 24 volts?

Amps and volts are two different things. Think of volts as the
pressure behind the flow and amps as the volume of the flow. The
amps is determined by dividing the voltage by the resistance I=E/R
where I is current or amps, E = voltage, and R is the resistance to
the flow of current. an example 12 volts with a 10 ohm resistance
will produce 1.2 amps 12 volts with 20 ohms resistance will produce
0.6 amps