Curriculum
Science — First Preparatory
Unit 1: Matter
0/8
Unit 2: Forces
0/6
Unit 3: Life
0/6
Unit 4: Earth and Space
0/4
Text lesson
Electric Forces
Electric Forces
Common mistakes
Common mistakes
- Believing that protons move during rubbing. Only electrons move.
- Believing that a charged object always attracts everything. A neutral object is attracted to it by induction.
- Calculating charge from the total number of electrons instead of the number of extra or missing electrons.
- Confusing positive and negative charge when rubbing. An object that gains electrons becomes negative; one that loses electrons becomes positive.
Electric Forces · 5 / 6