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It depends how they are connected. If the terminals of two 12 volt batteries batteries are connected to the same circuit (in parallel) then there is no change in the flow of current- it will just last for twice as long a time. But if two opposing terminals of the batteries are connected to each other first and the free terminals then connected to the circuit (in series) then there would be a total voltage of 24 volts and twice as much current would flow. The two batteries would last for the same length of time as one battery on its own.
What else can I help you with?
How much volts does the sun produce?
lots
What happens if you plant lots and lots and lots of trees in your town?
You will be bringing good things for the enviroment. There will be lots of oxygen so go for it! It will be great.
What happens if you hop all day?
You'll go through lots and lots of shoes.
What happens if you have Arousal in sport?
you just have to eat lots and lots of peanut butter and you will be fine
What happens at raves?
Dancing. Lots of dancing.
What happens if you put lots and lots of salt into water?
The concentration of salt increase up to saturation.
What happens in a blizzards?
It blows lots of snow and wind.
What happens every ten seconds?
Lots of things :-)
What happens when you go through pueberty?
lots of stuff
What happens if you over eat?
You can become obese and get lots of diseases
What happens to you if you take drugs?
Lots of things.. you trip out lol
What happens if you do not fertilize tomato plants?
lts and lots of explosions.
