Charge, conductors, insulators and semiconductors
Grade 11 Science Worksheet - Challenge Me
Circle the best answer, or write your answer on the line.
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?
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?
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
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
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
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
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
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
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
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