Batteries - cont.
3. Obviously the 9 volt battery has less voltage than the 12 volt car battery. But does that make the car battery only 33% more dangerous?
The car battery is much bigger and so has MUCH more energy. The car battery can push lots more charges through the 12 volts than the 9 volt can push through 9 volts. Remember that energy is the capacity to do work, either for good or bad.