Chapter 16

1. Chapter 16

2. At the position of the dot, the electric field points • Left. • Down. • Right. • Up. • The electric field is zero.

3. At the position of the dot, the electric field points • Left. • Down. • Right. • Up. • The electric field is zero.

4. A piece of plastic is uniformly charged with surface charge density 1. The plastic is then broken into a large piece with surface charge density 2 and a small piece with surface charge density 3. Rank in order, from largest to smallest, the surface charge densities 1 to 3. • η1>η2 >η3 • η1>η2 =η3 • η1=η2 =η3 • η2=η3 >η1 • η3>η2 >η1

5. A piece of plastic is uniformly charged with surface charge density 1. The plastic is then broken into a large piece with surface charge density 2 and a small piece with surface charge density 3. Rank in order, from largest to smallest, the surface charge densities 1 to 3. • η1>η2 >η3 • η1>η2 =η3 • η1=η2 =η3 • η2=η3 >η1 • η3>η2 >η1

6. Which of the following actions will increase the electric field strength at the position of the dot? • Make the rod longer without changing the charge. • Make the rod shorter without changing the charge. • Make the rod fatter without changing the charge. • Make the rod narrower without changing the charge. • Remove charge from the rod.

7. Which of the following actions will increase the electric field strength at the position of the dot? • Make the rod longer without changing the charge. • Make the rod shorter without changing the charge. • Make the rod fatter without changing the charge. • Make the rod narrower without changing the charge. • Remove charge from the rod.

8. Rank in order, from largest to smallest, the electric field strengths Ea to Ee at these five points near a plane of charge. • Ea = Eb = Ec = Ed = Ee • Ea > Ec > Eb > Ee > Ed • Eb = Ec = Ed = Ee >Ea • Ea > Eb = Ec > Ed = Ee • Ee > Ed > Ec > Eb > Ea

9. Rank in order, from largest to smallest, the electric field strengths Ea to Ee at these five points near a plane of charge. • Ea = Eb = Ec = Ed = Ee • Ea > Ec > Eb > Ee > Ed • Eb = Ec = Ed = Ee >Ea • Ea > Eb = Ec > Ed = Ee • Ee > Ed > Ec > Eb > Ea

10. Rank in order, from largest to smallest, the forces Fa to Fe a proton would experience if placed at points a – e in this parallel-plate capacitor. • Fa = Fb = Fc = Fd = Fe • Fa = Fb > Fc > Fd = Fe • Fa = Fb = Fd = Fe > Fc • Fe > Fd > Fc > Fb > Fa • Fe = Fd > Fc > Fa = Fb

11. Rank in order, from largest to smallest, the forces Fa to Fe a proton would experience if placed at points a – e in this parallel-plate capacitor. • Fa = Fb = Fc = Fd = Fe • Fa = Fb > Fc > Fd = Fe • Fa = Fb = Fd = Fe > Fc • Fe > Fd > Fc > Fb > Fa • Fe = Fd > Fc > Fa = Fb

12. Which electric field is responsible for the trajectory of the proton?

13. Which electric field is responsible for the trajectory of the proton?

14. What device provides a practical way to produce a uniform electric field? • A long thin resistor • A Faraday cage • A parallel plate capacitor • A toroidal inductor • An electric field uniformizer

15. What device provides a practical way to produce a uniform electric field? • A long thin resistor • A Faraday cage • A parallel plate capacitor • A toroidal inductor • An electric field uniformizer