Please enable JavaScript.
Coggle requires JavaScript to display documents.
P17 Electric charge - Coggle Diagram
P17 Electric charge
-
Electric fields:
-
-
-
Fields lines always go away from positive charges and towards negative charges – they have the same direction as the direction of the force on a positively charged particle at a point in that field
Charge and electrons
-
Usually the number of electrons around an atom is equal to the number of (positive) protons in the nucleus of the atom, and hence the atom is neutral
-
-
Charging by induction
When a charged object is held close to a conductor, electrons in the conductor are able to move towards (or away from) the charged object:
In the diagram above, electrons in the aluminium foil are attracted to the positively charged rod
This causes the top of the foil to become negatively charged, whilst the bottom edge of it will be left with a positive charge
The attraction between the positive rod and the negative charges on the top surface of the foil will cause the foil to be attracted to the rod
-
-