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Grade 11 · Science · Physics

11th grade Charge, conductors, insulators and semiconductors worksheet

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Charge, conductors, insulators and semiconductors

Grade 11 Science Worksheet - Challenge Me

NameDate

Circle the best answer, or write your answer on the line.

  1. Identical metal spheres A, B and C carry 12 nC, 0 nC and -2 nC. A touches B, then B touches C. What charge does C carry at the end, Ari?

  2. Identical metal spheres A, B and C carry -10 nC, 0 nC and 3 nC. A touches B, then B touches C. What charge does C carry at the end, Esme?

  3. Paper strips taped to a charged Van de Graaff dome stand up and spread out. Why, Jun?

    • Air blows them up
    • They carry like charges and repel
    • They carry unlike charges and attract

  4. Why does charge spread over the outside of a Van de Graaff's metal dome, Kira?

    • Like charges spread apart
    • Charge sticks to one spot
    • The metal soaks the charge inside

  5. A grounded metal sphere on a stick is brought near the charged dome, and a small spark jumps. What does the spark carry, Luz?

    • Protons from the dome
    • Light from inside the dome
    • Charge jumping the gap

  6. Milo says a balloon becomes positive by gaining protons. Agree or disagree?

    • Agree: protons carry positive charge onto it
    • Disagree: it loses electrons
    • Agree: rubbing moves protons

  7. Noah says wool turns positive because protons flow into it from the balloon. Agree or disagree?

    • Disagree: the wool lost electrons
    • Agree: wool makes protons
    • Agree: protons flow toward wool

  8. Pia says rubbing a balloon creates new charge. Agree or disagree?

    • Agree: the balloon makes electrons
    • Disagree: it only moves charge around
    • Agree: friction makes charge

  9. A neutral comb and a neutral cloth are rubbed together, and the comb ends with −4 nC. What charge does the cloth have, Tala?

    • 0 nC
    • +4 nC
    • −4 nC

  10. What does it mean for an object to be neutral, Zee?

    • It has no charged particles inside it
    • It has more neutrons than protons
    • Equal protons and electrons
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11th grade Charge, conductors, insulators and semiconductors worksheet – printable
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About this worksheet

Charge, conductors, insulators and semiconductors. Every version has 10 questions, and the answer key prints on the second page.

What your child will learn

  • I can explain that charge is conserved. I can count it before and after rubbing, touching (identical spheres share equally) and touching in turn.
  • I can say that electrons move in charging and protons stay, and find the number of extra electrons from a charge, n = Q ÷ e.
  • I can sort conductors (copper, aluminum), insulators (glass, rubber, plastic) and semiconductors (silicon). I know silicon is used in chips and diodes, and that doping changes how it conducts.
  • I can explain like and unlike forces, induced charge (a balloon on a wall, a can near a dome), and a Van de Graaff's spreading charge and small sparks, as objects only.

Standard: none (TX, FL)

Words to know

conductor: A material that lets charge move through it easily

insulator: A material that holds charge in place

semiconductor: A material, like silicon, that conducts in between

induction: Shifting charges in an object by bringing a charge near

conservation of charge: Total charge before = total charge after

Common mistakes

Your child ignored the minus sign. Positive and negative charges cancel when they share, so add with signs.

Your child multiplied by e. The number of electrons is the charge divided by the charge on one electron.

Your child averaged all three at once. The spheres touch in turn, so share between A and B first, then between B and C.

Questions parents ask

What is the most common mistake with charge, conductors, insulators and semiconductors?

Your child ignored the minus sign. Positive and negative charges cancel when they share, so add with signs.

Are these 11th grade science worksheets free to print?

Yes. All 6 printable versions at each level are free to print, with the answer key, and no account is needed.

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