Types of Voltage Sources

What provides more voltage, a car or the wall?
- Chelsea (age 17)
San Antonio, Texas, US

Hi Chelsea,

The usual source of electricity in a car is a 12 Volt DC (direct current) battery.  It is kept charged up by a generator that operates when the car is running.    By "wall" I presume you mean the wall receptacle that you plug appliances into.  This receptacle provides 110 Volts AC (alternating current) in the US and in other countries is frequently 220 Volts.  

 

LeeH

 

 

(published on 03/24/2014)