- Make the world a better place through real, fun, and free physics education.
My most recent video:
Electric Potential Difference in a Uniform Electric Field (10:29)
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In this video, we build directly on electric potential energy and electric potential to develop a clear, conceptual understanding of electric potential difference. Using parallel plates and a uniform electric field, you will see where the equation ΔV = −EΔr comes from and why electric potential difference exists even without a charge present. We also work through a full example using energy conservation to find the speed of a charged particle moving between plates, including a discussion of sign conventions, positive and negative charges, and what makes a situation physically impossible. This lesson is ideal for AP Physics 2, AP Physics C: Electricity an Magnetism, and introductory college physics students who want to truly understand electric potential difference, voltage, and electric fields rather than just memorize equations.
Chapters: 0:00 Introduction 0:22 Electric Potential Example 1:38 Equipotential Surfaces 3:26 Scalar Superposition 5:54 Electric Dipole Equipotential Surfaces 7:16 Adding the Electric Field
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My Most Recent Short:
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