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    Electrical Potential

    Uploaded by

    Ann Margarette Morales
    The document defines key terms related to electrical potential such as potential energy, potential gradient, coulomb, volt, and equipotential surfaces. It explains that electrical potential is dependent on the electric charge and distance from the charge source. The potential energy per unit charge is called electric potential. Equipotential surfaces have the same electric potential at every point. Formulas are provided for calculating electric potential, potential energy, and work done on a charge moving between equipotential planes. Sample problems demonstrate applying the concepts and formulas.

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    Electrical Potential

    Uploaded by

    Ann Margarette Morales
    96 views2 pages
    The document defines key terms related to electrical potential such as potential energy, potential gradient, coulomb, volt, and equipotential surfaces. It explains that electrical potential is dependent on the electric charge and distance from the charge source. The potential energy per unit charge is called electric potential. Equipotential surfaces have the same electric potential at every point. Formulas are provided for calculating electric potential, potential energy, and work done on a charge moving between equipotential planes. Sample problems demonstrate applying the concepts and formulas.

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    2. Electrical Potential

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    The document defines key terms related to electrical potential such as potential energy, potential gradient, coulomb, volt, and equipotential surfaces. It explains that electrical potential is dependent on the electric charge and distance from the charge source. The potential energy per unit charge is called electric potential. Equipotential surfaces have the same electric potential at every point. Formulas are provided for calculating electric potential, potential energy, and work done on a charge moving between equipotential planes. Sample problems demonstrate applying the concepts and formulas.

    Copyright:

    © All Rights Reserved
    Download as DOCX, PDF, TXT or read online from Scribd
    Download as docx, pdf, or txt
    96 views2 pages

    Electrical Potential

    Uploaded by

    Ann Margarette Morales
    The document defines key terms related to electrical potential such as potential energy, potential gradient, coulomb, volt, and equipotential surfaces. It explains that electrical potential is dependent on the electric charge and distance from the charge source. The potential energy per unit charge is called electric potential. Equipotential surfaces have the same electric potential at every point. Formulas are provided for calculating electric potential, potential energy, and work done on a charge moving between equipotential planes. Sample problems demonstrate applying the concepts and formulas.

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    Electrical Potential

    DEFINITION OF TERMS

    Electric Potential Energy


    Potential gradient
     The total potential energy a unit charge will
    possess if located at any point in the outer  the integration of negative of electric field
    space. intensity with respect to the distance.
     It is a scalar quantity.  The relation between electric field intensity
     Possesses only magnitude and no direction. and potential gradient is E = - d V d r
     It is measured in terms of Joules and is
    Coulomb
    denoted by V.
     Dependent upon the charge of the object  the SI unit of electric charge
    experiencing the electric field.  equal to the quantity of electricity conveyed in
     There are two key elements on which the one second by a current of one ampere.
    electric potential energy of an object depends:
    1) Electric charge - a property of the object Volt
    experiencing the electrical field, and  the unit of electric potential difference
    2) Distance from source - the location within  or the size of the force that sends the
    the electric field electrons through a circuit.
    Electric Potential

     Purely location dependent. FORMULAS


     The potential energy per charge. Electric V = electric potential energy
    Equipotential surface Potential q = point charge
    r = distance between any point
     Any surface having the same electric potential V = k × [q/r] around the charge to the point
    at every point. charge
     Equipotential points- If the points present in an k = Coulomb constant; k = 9.0 ×
    electric field are all at similar electric 109 N
    potential. Electric
     Equipotential line- If these points are Potential U = elastic potential energy
    connected by a curve or a line. Energy q1 and q2 = point charge
     Equipotential Surface- When such points lie on r = distance of separation
    a surface. U = k x k = Coulomb constant;
     Equipotential volume- if these points are q1q2/r k = 9.0 × 109N
    distributed throughout either a volume or
    space.
    Equipotential W = Work
    Potential Gradient Surface q = point charge
    ∆V= Va - Vb
     the local rate of change of the potential with W = -q∆V
    respect to displacement

    Electric fields

     the physical field that surrounds electrically


    charged particles and exerts force on all other
    charged particles in the field, either attracting
    or repelling them
    SAMPLE PROBLEMS

    1. Two point charges are separated by a distance of


    10cm. Charge on point A=+9 and charge on point
    B= -4 . . What is
    the change in electric potential energy of charge on
    point B is accelerated to point A?

    3. Two charges of magnitude 2 nC and 3 nC are placed


    Given: at 2cm from each other. Calculate the electric
    potential energy between these 2 charges.

    Find: The change in electrical potential energy

    Solution:

    2. A positive particle of charge 1.0C accelerates in a


    uniform electric field of 100V/m. the particle
    started from rest on an equipotential plane of 50V.
    After t=0.0002 seconds, and the particle is on an
    equipotential plane of V=10V. determine the
    distance travelled by the particle.

    Solution:

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