Electric Potential Energy and Voltage
What is a battery?
Energy is the ability to do work- to make things move or change. A battery is a device that stores the energy in electric charges so that it can be used at some later time to do work.
What is a battery?
In other words, a battery is a source of electric potential energy-stored energy that has the potential to make something move or change.
How does a battery provided energy?
A battery provides energy to push negative charges through conductors that are connected together. Energy to push electrons is availble if positive and negative charges are seperated. In a flashlight battery, for example, energy from chemical reaction does the work of seperating the charges.
How does a battery provided energy?
A flashlight battery has two terminals called electrodes in a moist paste called an electrolyte that conducts electricity. Electrons build up at one terminal, making it negatively charged. At the same time, electrons withdraw from the other terminal, leaving it positively charged.
What is a battery?
Batteries convert chemical energy to electrical energy.For example, batteries that power a flashlight or a cordless mouse convert chemical energy to electrical energy are called electrochemical cells, and may be wet cells or dry cells.
What is voltage?
Potential difference is another name for voltage. The standard unit for voltage is the volt (V). The label 1.5 V on a battery means that it has a potential difference of 1.5 V.
What is voltage?
Scientists use the term potential difference to talk about the difference in potential energy per coulomb of charge between two points of an electric circuit.