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What is Electrical Field?. Electric Field is the Area around a charge where the electrical forces are felt by another charge, q 0. Let’s draw the forces:. -. q. Attractive electrical force. +. q. Repulsive electrical force. Examples:. Force around a positive charge
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What is Electrical Field? Electric Field is the Area around a charge where the electrical forces are felt by another charge, q0.
Let’s draw the forces: - q Attractive electrical force + q Repulsive electrical force
Examples: Force around a positive charge Force around a negative charge
What is Potential Difference? • Gravitational Potential Difference is A hA B hb
Electrical Potential Energy • Charge moves from high potential A to low potential B A +++++++++++ A dA B db - - - - - - - - - - -
Electrical Potential V V is the ratio Electrical Potential Energy of a qo with the qo
Gravitational Potential Difference An object that has Gravitational Potential Energy can do work if ________________________
Electric Potential Difference Electric Potential: Electrical Potential DIFFERENCE:
Electric Potential Difference An electrical charge can do work if _________________________________ _________________________________
Example: Work done by qo, (2x10-6C) is 5x10-5J. Find V.
Unit for Ep J (joule) eV (electron Volt) 1eV is the change in potential energy of an e- when moved through a PD of 1 Volt. • 1eV=1.60x10-19J