Work and electric potential in a moving charge

[Caterr]

1. Explain briefly the relationship between electric potential and work in moving a positive charge q from point A to point B in an electric field

Should I explain that work is potential energy plus kinetic energy? is it asking for that?
and also, does the fact that it's a positive charge moving change anything? I'm confused
help

 

[pgardn]

1. Explain briefly the relationship between electric potential and work in moving a positive charge q from point A to point B in an electric field

Should I explain that work is potential energy plus kinetic energy? is it asking for that?
and also, does the fact that it's a positive charge moving change anything? I'm confused
help

Did this come with a diagram? The direction of the E-field from point A to point B makes a big difference. Is the E field assumed to be uniform?

Lots of info missing here unless you are supposed to go through all the general E-field orientations on your own.

 

[MatticusjK]

I just had this exact same question on a physics test today. Word for word, and I've been looking for the answer. Any luck?

 

[ehild]

1. Explain briefly the relationship between electric potential and work in moving a positive charge q from point A to point B in an electric field

Should I explain that work is potential energy plus kinetic energy? is it asking for that?
and also, does the fact that it's a positive charge moving change anything? I'm confused
help

You need to know the definition of electric potential .

http://www.britannica.com/EBchecked/topic/182697/electric-potential

ehild

 

[Nickie]

Yes, the relationship between electric potential and work in moving a positive charge q from point A to point B in an electric field can be explained by the concept of potential energy and kinetic energy. The electric potential at a point in an electric field is a measure of the potential energy per unit charge at that point. In other words, it represents the amount of work that needs to be done to move a unit charge from that point to a reference point, usually infinity, without any acceleration.

When a positive charge q is moved from point A to point B in an electric field, work is done on the charge by the electric field. This work is equal to the change in potential energy of the charge, which is given by the difference in electric potential between the two points multiplied by the charge q. In other words, the work done on the charge is equal to the change in electric potential energy of the charge.

As the charge moves from point A to point B, it also gains kinetic energy due to its motion in the electric field. This kinetic energy is directly related to the work done on the charge and the change in electric potential energy. Therefore, the work done on the charge can also be expressed as the change in potential energy plus the change in kinetic energy.

In summary, the relationship between electric potential and work in moving a positive charge q from point A to point B in an electric field can be understood as the work done on the charge being equal to the change in potential energy plus the change in kinetic energy. The fact that it is a positive charge moving does not change this relationship, as it is still experiencing the same amount of work and change in potential energy in the electric field.