25. Electric Potential

Electric Potential Energy

Potential Energy due to Point Charges

 At one location in space the potential energy of a 10 nC charge is <math display=‘inline’><mrow><mn>12</mn><mo rspace="thickmathspace">&#x2062;</mo><mi mathvariant="normal" class="MathML-Unit">J</mi></mrow></math>. If the 10 nC charge was replaced with 20 nC charge at the same location, what would be the electrical potential energy of the 20 nC charge? 

 <img src="https://media.pearsoncmg.com/aw/aw_knight_physics_5/msa/content/practice-test/img/P22_42_Figure.jpg" alt="Three charges are at the vertices of a horizontally oriented rectangle."><br>What is the electrical potential energy of the charges shown in the figure? 

 What is the electric potential energy of the charges shown in the figure?<br /><img src="https://media.pearsoncmg.com/aw/aw_knight_cp_4_du/msa/content/practice-test/img/CH21_Question01.jpg" alt="Three charges are at the vertices of a horizontally oriented rectangle that is 3.0 centimeters wide and 1.0 centimeters tall. The charge on the upper right corner is positive 8.0 nC. The charge on the lower right corner is negative 10 nC. The charge in the lower left corner is positive 10 nC."  

Physics 12.4.1a - Electric Potential and Potential Difference

 The change in potential is positive; the change in potential energy is negative. 

 The change in potential is negative; the change in potential energy is also negative. 

 The change in potential is positive; the change in potential energy is also positive. 

 The change in potential is zero; the change in potential energy is also zero. 

 The change in potential is negative; the change in potential energy is positive. 

 An electron is in between charged capacitor plates. It is moved from a position near the positive plate to a position near the negative plate. What is true about the change in the potential and the change in the potential energy? 

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