Practice Potential Energy Of A System Of Two Charges In An External Field (2.7.2)

Practice: Potential energy of a system of two charges in an external field

Lesson 2.7.2ELECTROSTATIC POTENTIAL AND CAPACITANCE

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9 questions

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6 sample questions

Question 1.
Define potential energy in electrostatics.
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Think about what is needed to move two charges together.
Question 2.
What is the superposition principle?
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Consider how you would find the total effect of multiple forces.
3Question 3.
What is the relationship between work done and potential energy?
- Directly proportional
- Inversely proportional
- No relationship
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Consider how energy changes as charges are moved.
4Question 4.
True or False: Potential energy can be positive or negative.
- True
- False
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Think about attractive and repulsive forces.
Question 5.
Two charges, +3 µC and -3 µC, are placed 50 cm apart in an external field of strength 200 N/C. Find the total potential energy of this configuration.
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Start by determining each piece of energy involved.
Question 6.
A charge q is moved from point A to point B in a uniform electric field. Describe how the work done changes as the distance between A and B increases.
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Think of the formula for work done in a force field.

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