score will partly depend on the presentation of your work Write your solution as
ID: 1787798 • Letter: S
Question
score will partly depend on the presentation of your work Write your solution as though you are explaining things to someone who knows nothing about the problem. r you quote an equation or definition, briefly describe what it is and why it is relevant or derive it from core principles. 3. Equation sheet is the Iast page PHY 112/114 Fall 2017 1) ICI Explain why separating two particles of opposite charge increases the electrical potential energy of the field/particles system 2) ICI Two, initially well separated conductors are in atic equilibrium. They have a non-zero voltage difference between atic equilibrium, what will the them. If they are brought into contact with each other and allowed to return to resulting voltage difference be between the conductors? Briefly explain your answer 3) Two identical 2 × 10 9 kg charged particles are shot directly at each other at initial speeds of 5 × 10 m s. They are initially very far apart. They come to a halt when they are 2 m apart what is the magnitude of the charge of these particles? 1 A 2 C particle s initially at rest within a uniform electric field. It travels through a displacement = (3 cm),-(4 cm) j it is captured, moving with a kinetic energy of 10 J (a) What is the voltage difference associated with the particle's displacement? (b) What is the strength of the electric field? (c) What are the electric field's z- and y-components? Fall T2 Electric Fields Y 112/114 Is there a physical difference between "target" particles and "source particles? Briefly explain
Explanation / Answer
Electric potential energy is given as
PE= kq1q2/r
where q1 and q2 are the two opposite charges and r is the distance between this.
Electric PE is the energy of the system caused due to the arrangement of certain charges. In this case, as there are only 2 charges, the PE depends on their distance. As the two charges are opposite, the electrostatic force between them is attractive. When such pairs of charges are separated, work is done against the system and the energy required to separate the charges is stored in the system in the form of electric potential energy. This is in accordance with the principle of conservation of energy.
The more we separate the particles, the more PE in the system. As we can see from the equation, PE is inversely proportional to the distance between the two particles.
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