Electrical energy is easy to move from place to place, using wire or cables. However, electrical energy must be changed into other forms of energy before we can use it. The symbol for power is \(P ...

Circuits with lots of components need more voltage because they need more electrical energy pushed to them. The more batteries, a higher voltage means bulbs will be brighter and buzzers will be ...

Much like the batteries that are found under the hoods of automobiles or in flashlights, a fuel cell converts chemical energy to electrical energy. All fuel cells have the same basic configuration ...