I've often wondered why a 9 volt battery can be so harmless, yet a 12
volt car battery can (I've heard) kill you. Can't you put two 9 volt
batteries in series and get an 18 volt "battery pack"?
Please, enlighten me... someone.
think of voltage as speed of movement and
current as mass of movement.
now think of a 9 volt battery going
9 feet per second and a 12 volt battery
doing 12 feet per second.
now one has a little more speed than the
other and isn't really that much of a difference.
now think of this, the 9 volt is coming out a
brook (current), and the 12 Volt is coming out
of a River! (lots of current).
which one is going to be stopped the easiest ?
and still. think of the 12 volt (speed) moving
down a little brook verses the 9 Volt moving down
a river! ,. think of the mass of water ...
you need current to cause damage and of course to
get current, there will always be voltage involved!
because a lake sitting still has lots of mass (current)
but no movement(voltage)! so of course nothing is going
to happen here, it is the combination of the 2..
the same can be applied in water wheels., wider rivers
allow for wider paddles to be used, thus the current is stronger
but the speed of movement remains the same (Voltage).
this enables them to connect more generators on the shaft to
build up the amp supply..