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imblum
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Hello, I am just starting to teach myself about electronics, and am already coming up with questions my text is not answering adequately. Unfortunately I don't know anyone who I could ask as I'm not in school.
Consider two 12V batteries, say a car battery and a garage door opener battery.
If you were to connect the terminals of the car battery, you could be killed, though of course if you connected the terminals of your small 12V you would not. Are they leaving a battery rating out somewhere that would tell you the big one is more dangerous? I thought both batteries were just 12V.
Considering Ohm's Law: V=IR, as resistance (R) tends to zero, current (I) will tend toward voltage (V) (right?)
Would a 12V garage door opener battery really be able to put out 12V at 12A with no load?
It also seems that the maximum power: P=IV you could get out of a 12V battery with practically zero resistance (regardless of size) would be just under 144W. Wouldn't this be a a lot for that little battery?
I feel like I'm missing some central stuff. I hope I'm not embarrassing myself by asking silly questions.
thanks,
matt
Consider two 12V batteries, say a car battery and a garage door opener battery.
If you were to connect the terminals of the car battery, you could be killed, though of course if you connected the terminals of your small 12V you would not. Are they leaving a battery rating out somewhere that would tell you the big one is more dangerous? I thought both batteries were just 12V.
Considering Ohm's Law: V=IR, as resistance (R) tends to zero, current (I) will tend toward voltage (V) (right?)
Would a 12V garage door opener battery really be able to put out 12V at 12A with no load?
It also seems that the maximum power: P=IV you could get out of a 12V battery with practically zero resistance (regardless of size) would be just under 144W. Wouldn't this be a a lot for that little battery?
I feel like I'm missing some central stuff. I hope I'm not embarrassing myself by asking silly questions.
thanks,
matt
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