2. Review Jeopardy Electrostatics

3. 1. Who was the first to determine the electron’s charge & what is that charge? Q electron = -1.6 x 10 -19 C

4. 2. A piece of plastic has a net charge of +2.00 μ C. How many more protons than electrons does this piece of plastic have?

5. 3. Two point charges, separated by 1.5 cm, have charge values of +2.0 and – 4.0 μ C, respectively. What is the magnitude of the electric force between them?

6. 4. A force of 6.0 N acts on a charge of 3.0 μ C when it is placed in a uniform electric field. What is the magnitude of this electric field? F = QE 6.0 = (3.0 x 10 -6 C) E E = 2.0 x 10 6 N/C

7. 5. A metal sphere of radius 10.0 cm carries a charge of +2.0 μ C. What is the magnitude of the electric field 5.0 cm from the sphere ’ s surface?

8. 6. Sketch the electric field lines around a negative point charge

9. 7. Determine the unknown charge. 3C3C ?

10. 8. An uncharged conductor is supported by an insulating stand. I pass a positively charged rod near the left end of the conductor, but do not touch it. What charge will the right end of the conductor have? + + ++++++++++

11. 9. If the distance between two point charges is increased by a factor of 5, the mutual force between them will be changed by what factor?

12. 10. An electron in an electric field will experience a force acting: a.Parallel (same direction) b.Anti-parallel (opposite direction) c.Perpendicular d.Along an equipotential line e.Need more information

13. FINAL JEOPARY Write down how many points your team is willing to bet. –You can bet as low as zero points and as high as your whole score.

14. Calculate the electric field (magnitude & direction) at the origin generated by the following three charges. A q 2 = -2.00  C at (-5.00 m, 0), q 1 = -1.50  C at (3.5 m, 0.0), and q 3 = +1.50  C at (4.00 m, 0). q 2 = - 2.0x10 -6 C d=5.00 m q 1 = - 1.5x10 -6 C d= 3.5 m q 3 = + 1.5x10 -6 C d= 4.0 m