3 ms·
Let me try with just the analogy of a hose and your thumb. Water is flowing out of the hose at some rate. If you put your thumb over the end of the hose, you
by creeble 6y ago
Let me try with just the analogy of a hose and your thumb.
Water is flowing out of the hose at some rate. If you put your thumb over the end of the hose, you can create a stream of water (of less volume) that shoots out a farther distance because of increased pressure (you can feel this pressure increase in your thumb).
Think of amps as the volume of water, and voltage as the pressure. Power is voltage times current, or pressure times volume of water.
You could squirt a stream of water many feet (raising the voltage), but it's not a very large quantity of water (amps). Conversely, with your thumb off the end of the hose, the pressure (volts) isn't very high (it just flows out at whatever your tap pressure is), but the volume of water is significant (amps).
Curious whether that is any clearer of an analogy?
- globular-toast 6y agoThe thumb is commonly used as an analogy for a resistor because it limits the current. But with the hosepipe it seems to increase the voltage, which a resistor does not do. What you describe (trading current for voltage) is more like a transformer.