PHYSICS 5C Chapter 23: Homework 3. Potential energy

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orangemole240

7 Nov 2018

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Document Summary

Electric potential charge : potential energy associated with the separation of charges or ( equivalently ) charges in an electric field. Electric potential ( voltage) : a measure ( or mapping) of the electric potential energy of a test charge if placed at a particular point in an electric field. Electron volts a convenient unit of energy when working with individual charged particles . Equipotential electron that is accelerated across a lines lines that run perpendicular. 1 to volt the electrical potential ( voltage) potential differences electric field lines. The electric field at a particular point is calculated by taking spatial derivatives of the electric field at that. E i eyeff ; ez potential electric point energy that depends on the relative positions of the charges. Difference when a free positive charge is q accelerated by an electric field it is given kinetic energy like if the charge was going down hill where the electric potential energy.

Related Questions

a) To determine the work done, one can always just simply multiply force time distance.

True

False

b) A conductor in electrostatic equilibrium must be entirely at the same potential.

True

False

c) The electric field

is always tangent to an equipotential surface.

is always perpendicular to an equipotential surface.

makes an angle to an equipotential surface that depends on the amount of charge.

always bisects an equipotential surface.

d) The electron-volt is an alternative unit for

electric potential.

electric current.

electric potential energy

electric charge

roseyak260

Consider two points in an electric field. The potential at point 1, V1, is 32 V. The potential at point 2, V2, is 179 V. An electron at rest at point 1 is accelerated by the electric field to point 2.

Part (a) Write an equation for the change of electric potential energy ΔU of the electron in terms of the symbols give.

Expression:

ΔU = ________

Part (b) Find the numerical value of the change of the electrical potential energy in electron volts (eV).

Numeric: A numeric value is expected and not an expression

ΔU = __________