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Electric Charge Fundamentals Worksheet
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Electric Charge Fundamentals Worksheet
Investigate how electric charge behaves, moves and affects objects. Read each scenario carefully. For charge calculations, use the charge of one proton, +1.60 × 10⁻¹⁹ C, and one electron, −1.60 × 10⁻¹⁹ C. Assume objects are electrically isolated unless stated otherwise.
1.Electrons move from the wool to the balloon. After rubbing, what is the charge of each object, and why?
2.A neutral plastic rod is rubbed with a cloth and becomes negatively charged. Which statement best explains what happened?
- The rod gained electrons from the cloth.
- The rod gained protons from the cloth.
- The rod lost electrons to the cloth.
- The rod created extra negative charge.
3.Two small objects have charges of +3 nC and +7 nC. When brought close together, will they attract or repel? Explain using the rule for charged objects.
4.A tiny object has 12 protons and 10 electrons. Calculate its net charge in coulombs. Show how you decided whether the result is positive or negative.
5.A neutral object contains no charged particles.
TrueFalse
6.In solids, electric charging by rubbing usually happens because move from one material to another. Protons remain in the of each atom.
7.Match each electric-charge term with the correct meaning.
- Conductor
- Insulator
- Grounding
- Material in which electric charge does not move easily
- Material in which electric charge can move relatively easily
- Providing a conducting path for charge to move between an object and Earth
8.After walking across a synthetic carpet on a dry day, Maia touches a metal door handle and feels a tiny spark. Explain how charge could build up on Maia and why a spark occurs when she touches the handle.
9.A student sees a damaged electrical cord beside a wet floor. Which action is safest, and why?
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