physics d.2-d.4, b.5

coulomb’s law: electric force between two point charges is directly proportional to the product of two charges and inversely proportional to square of the distance between them, and directed along the line joining the two charges

electric field: region of space where electric charge experiences an electric force

electric field strength: force per unit charge acting on a small positive test charge

magnetic field: region of space where a bar magnet would experience an electric force

electrical potential energy: work that needs to be done by an external agent to bring a set of charges from where they were separated by an infinite distance to their current position

electrical potential: work done per unit charge in bringing a small positive test charge from infinity to a point in an electric field

lenz’s law: induced emf will be such so as to oppose the change in magnetic flux, equivalent to energy conservation

faraday’s law of induction: the size of the induced emf is proportional to the rate of change of flux linkage