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3 cards from this section. Quick, good the night before a test.
What is the electrostatic potential due to a point charge of 2 × 10–6 C at a distance of 50 cm?
Use the formula V = Q / (4πε₀r).
Define electrostatic potential in your own words.
Consider the work concept.
What is the formula for electrostatic potential due to a point charge?
Think about how potential is derived from work.
True or False: Potential energy is always positive.
Consider the examples of opposite charges.
Calculate the total potential at a point 0.3 m from a point charge of 5 nC and 0.4 m from another point charge of -3 nC.
Don't forget the signs of charges!
If the potential at a point is known to be 10 V and a charge of 2 mC is placed there, what is the potential energy?
This is a direct application of the relationship between potential and energy.
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