elctricity
Yes because if you use ELECTRICITY for the technology then you are using science (lightening, power stations, circuits, batteries). Ps I'm not entirely sure tho!
Many flashlights use series circuits because they allow multiple batteries to be connected in a way that adds their voltages together to power the light. This setup is simple and cost-effective for producing a reliable and bright light output.
No, not directly anyway. Some power plants may use batteries for emergency power supplies.
Headphones do not use batteries, they use a power source such as an iPod or mobile phone.
no not from the power grid. They do use batteries.
Electronics circuits and devices are operate on D.C power supply. But the source of D.C power are mostly batteries and rectifiers. Batteries are really deliver pure D.C supply but they are bulkier and big in size. So we use rectifier circuit for operating Electronic devices. sometimes where backup of supply is needed there both source may present for example in laptops there batteries and rectifier(adapter) both are used.
Of course flashlight use batteries,no batteries means no power. I have a Imalent flashlight with remote control,very fashion,lol
batteries
Yes, many toys which use batteries contain parallel and series circuits.
Double A Batteries.
Batteries. You need them to generate the power.