In physics, “work” means any transfer of energy that results in movement against a force—lifting a weight, moving a charge, spinning a wheel. . What allows a battery to power a flashlight for hours or drive a car for hundreds of miles? The answer lies in the invisible forces of the atomic world, where physics and chemistry intertwine to store and deliver energy on demand. Batteries consist of two electrical terminals called the cathode and the anode, separated by a chemical material called an electrolyte. To accept and release energy, a. . In this activity, participants will build basic batteries from pennies and a salt/vinegar solution and test their batteries using LED lights and voltmeters. What is a battery? A battery is an indispensable energy storage device that plays a significant role in our daily lives by providing electricity when and where it is needed. Batteries can also protect us from storms, heatwaves, and other events that damage the. .
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