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18.1 Physics 6B Electric Potential

# 18.1 Physics 6B Electric Potential - Physics 6B Electric...

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Physics 6B Electric Potential and Electric Potential Energy Prepared by Vince Zaccone For Campus Learning Assistance Services at UCSB

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Electric Potential Measured in Volts Electric Potential Energy Measured in Joules ) Coulomb Joule 1 Volt 1 ( = Prepared by Vince Zaccone For Campus Learning Assistance Services at UCSB
Electric Potential Measured in Volts Represents the energy it takes to move exactly 1 Coulomb of charge from one place to another in an electric field. Electric Potential Energy Measured in Joules Represents the energy it takes to move a charge from one place to another in an electric field. ) Coulomb Joule 1 Volt 1 ( = Prepared by Vince Zaccone For Campus Learning Assistance Services at UCSB

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Electric Potential Measured in Volts Represents the energy it takes to move exactly 1 Coulomb of charge from one place to another in an electric field. Formula for potential near point charge Q: Electric Potential Energy Measured in Joules Represents the energy it takes to move a charge from one place to another in an electric field. Formula for the potential energy of 2 point charges Q and q: ) Coulomb Joule 1 Volt 1 ( = r kQ V = r kQq U elec = Prepared by Vince Zaccone For Campus Learning Assistance Services at UCSB
Electric Potential Measured in Volts Represents the energy it takes to move exactly 1 Coulomb of charge from one place to another in an electric field. Formula for potential near point charge Q: Notes: This is not a vector. Use the sign of the charge to determine the sign of the potential. Potential is defined to be zero when r→∞ We will typically use potential differences that will look like ΔV. Don’t get voltage confused with velocity or volume. Electric Potential Energy Measured in Joules Represents the energy it takes to move a charge from one place to another in an electric field. Formula for the potential energy of 2 point charges Q and q: Notes: This is not a vector, so the signs of the charges may be used in the formula. Potential Energy is always Potential times charge: ) Coulomb Joule 1 Volt 1 ( = r kQ V = r kQq U elec = q V U elec = Prepared by Vince Zaccone For Campus Learning Assistance Services at UCSB

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Example 1: Two point charges Charges Q and q are separated by distance r. +Q +q r Prepared by Vince Zaccone For Campus Learning Assistance Services at UCSB
Example 1: Two point charges Charges Q and q are separated by distance r. The potential energy of this arrangement is given by our formula: +Q +q r r kQq U elec = Prepared by Vince Zaccone For Campus Learning Assistance Services at UCSB

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Example 1: Two point charges Charges Q and q are separated by distance r. The potential energy of this arrangement is given by our formula: This represents the amount of energy it would take to move these charges to where they are now, if they started very far apart (r→∞) +Q +q r r kQq U elec = Prepared by Vince Zaccone For Campus Learning Assistance Services at UCSB
Example 1: Two point charges Charges Q and q are separated by distance r.

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18.1 Physics 6B Electric Potential - Physics 6B Electric...

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