Quiz 3

• What statement is true about the surface of charged conductor in equilibrium (it means no

  charge is moving)?

  Electric field is perpendicular to the surface, and potential is constant
• Consider a uniform electric field of 50 N/C directed toward the east. If the voltage

  measured relative to ground at a given point in the field is 80 V, what is the voltage at a

  point 1.0 m directly east of the point?

  30 V
• The absolute potential at a distance of 2.0 m from a positive point charge is 100 V. What

  is the absolute potential 4.0 m away from the same point charge?

  50 V
• If an electron is released in electric field, it naturally moves:

  from low potential to high potential, and its energy decreases
• Consider a point charge +Q. What is bigger: its electric field 2 m from this charge, or its

  potential 2 m from the charge?

  The two cannot be compared