What do you mean by electric potential energy?
Electric potential energy is the energy that is needed to move a charge against an electric field. You need more energy to move a charge further in the electric field, but also more energy to move it through a stronger electric field. It’s hard work, because the electric force is pulling them together.
Where is the potential due a line charge zero?
The total potential at the point will be the algebraic sum of the individual potentials created by each charge. If you place the -1 C charge 1 cm away from the point then the potential will be zero there.
What is the relation between force and potential energy?
F in the definition of potential energy is the force exerted by the force field, e.g., gravity, spring force, etc. The potential energy U is equal to the work you must do against that force to move an object from the U=0 reference point to the position r.
What is zero no work give an example?
Zero work is defined when force and displacement are perpendicular to one another and when force or displacement is zero. Example: The force acts in a downward direction, When we hold an object and walk, If you push a wall, it doesn’t move there’s no work done.
What is positive work and negative work Give one example of each?
If we kick a football, then the football will travel along the direction of force applied. Therefore work done on the football will be positive. (ii) Example of negative work: When we push a book to just a distance, the work performed by the frictional force will be negative.
What does it mean when electric potential energy is zero?
Zero Potential Another way of saying it is that it is the change in potential which has physical significance. The zero of electric potential (voltage) is set for convenience, but there is usually some physical or geometric logic to the choice of the zero point.
How do you define field lines?
A field line is a graphical visual aid for visualizing vector fields. It consists of a directed line which is tangent to the field vector at each point along its length.
What is electric field and its unit?
The value of the electric field has dimensions of force per unit charge. In the metre-kilogram-second and SI systems, the appropriate units are newtons per coulomb, equivalent to volts per metre.
What is electric field in simple words?
An electric field is a vector field that shows the direction that a positively charged particle will move when placed in the field. More precisely, if a particle has an electric charge and is in an electric field , the electric force the charge will feel is. .