Module 3
1. Module 3
1.49. Module Glossary
Module 3—Electrical Phenomena
Module Glossary
Coulomb’s law: the magnitude of the electrostatic force between two charged objects is directly proportional to the product of the two charges on the objects and inversely proportional to the square of the distance of separation between their centres
electric field: a property of the space around a source charge that enables the source charge to exert forces on test charges in the region
electric potential difference: the change in electric potential experienced by a charge moving from one point to another in an electric field
It is sometimes called potential difference.
field: a region of influence surrounding an object through which a force operates
grounding: the process of transferring charge to and from Earth
torsion balance: an instrument designed to measure small forces by the twisting of a thin wire
voltage: the value, in volts, of the change in electric potential energy stored per unit of charge
It is also called electric potential.