{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

ch21 - Chapter 21 1 A coulomb is the same as A an...

Info icon This preview shows pages 1–4. Sign up to view the full content.

View Full Document Right Arrow Icon
Chapter 21: ELECTRIC CHARGE 1. A coulomb is the same as: A. an ampere/second B. half an ampere · second 2 C. an ampere/meter 2 D. an ampere · second E. a newton · meter 2 ans: D 2. A kiloampere · hour is a unit of: 3. The magnitude of the charge on an electron is approximately: 4. The total negative charge on the electrons in 1 mol of helium (atomic number 2, molar mass 4) is: 5. The total negative charge on the electrons in 1 kg of helium (atomic number 2, molar mass 4) is: A. 48 C B. 2 . 4 × 10 7 C C. 4 . 8 × 10 7 C D. 9 . 6 × 10 8 C E. 1 . 9 × 10 8 C ans: C Chapter 21: ELECTRIC CHARGE 321
Image of page 1

Info icon This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
6. A wire carries a steady current of 2 A. The charge that passes a cross section in 2 s is: 7. A wire contains a steady current of 2 A. The number of electrons that pass a cross section in 2 s is: 8. The charge on a glass rod that has been rubbed with silk is called positive: 9. To make an uncharged object have a negative charge we must: A. add some atoms B. remove some atoms C. add some electrons D. remove some electrons E. write down a negative sign ans: C 10. To make an uncharged object have a positive charge: 322 Chapter 21: ELECTRIC CHARGE
Image of page 2
11. When a hard rubber rod is given a negative charge by rubbing it with wool: 12. An electrical insulator is a material:
Image of page 3

Info icon This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Image of page 4
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern