Originally Posted by tastycaramel
, the lightbulb would have some form of resistance right? Not exactly sure because I barely pass my electronics class.
Everything but superconductors do.
I have some light bulbs rated for 120 volts only.
They draw 1 amp on a 20 amp circuit.
If I put one of those in use in Singapore, the higher voltage - that's the one that is pushed - would destroy it immediately.
Chargers in different countries have different plugs for the wall and can accommodate different input voltages.
But the standard 5 volts output is what makes it good for charging micro usb devices.