How is Work Calculated in an Electric Field?

In summary, work done in relation to electric field is the amount of energy transferred when an electric force acts on an object and causes it to move a certain distance. It is directly related to potential energy, with work done decreasing the potential energy of the system and work done on the system increasing potential energy. The unit of measurement for work done in an electric field is joules (J), and it can be negative when the electric force and the direction of movement are in opposite directions. The direction of work done is determined by the direction of the electric force and the direction of movement, with positive work done when they are in the same direction and negative work done when they are in opposite directions.
  • #1
jsmith613
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Homework Statement



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Homework Equations


The Attempt at a Solution



now I know this has something to do with energy done on electron and KE.

apparently work done on electron is:
W = eV

BUT surely this implies V is constant. as the charge moves, will not V change?
hence it should be
W = 0.5*eV?
 
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  • #2
found it
my book says V is the p.d that charges MOVE THROUGH not are in :)
 

FAQ: How is Work Calculated in an Electric Field?

What is work done in relation to electric field?

Work done in relation to electric field is the amount of energy transferred when an electric force acts on an object and causes it to move a certain distance. It is calculated by multiplying the magnitude of the electric force by the distance the object moves in the direction of the force.

How is work done by an electric field related to potential energy?

Work done by an electric field is directly related to potential energy. When work is done by the electric field, the potential energy of the system decreases. Conversely, when work is done on the system, the potential energy increases.

What is the unit of measurement for work done in an electric field?

The unit of measurement for work done in an electric field is joules (J). This is the same unit used to measure other forms of energy such as kinetic energy and potential energy.

Can work done by an electric field be negative?

Yes, work done by an electric field can be negative. This occurs when the electric force and the direction of movement of the object are in opposite directions. In this case, the work done is considered to be negative as the electric field is doing work against the movement of the object.

How is the direction of work done by an electric field determined?

The direction of work done by an electric field is determined by the direction of the electric force and the direction of movement of the object. If the force and movement are in the same direction, the work done is considered to be positive. If they are in opposite directions, the work done is considered to be negative.

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