Is a 12V car battery more powerful than a 12V power adapter?
I'm confused about the relationship between the voltages of different power sources. Since a car battery is more powerful than an adapter and both are known to have output of 12 Volts, what can be said about how much power is consumed by the devices running on 12V?
Will the same amount of current flow through a simple circuit which comprises a 5kΩ Resistor if you supply 12V from a car battery and if you supply 12V from the power adapter?
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