Electricity and Magnetism Concepts

Flashcards covering the key concepts of electricity and magnetism based on lecture notes.

Atoms have the same number of protons and __.

electrons

Conductors allow charges to flow within it and are mostly __.

metal

Insulators are materials that impede the free flow of __ from atom to atom.

electrons

Electric current is the continuous movement of electric charge through a __ in a circuit.

material

Voltage is the energy needed to push one Coulomb of charge through an electric circuit so that the charge can flow through wire to create __.

electric current

Electric current is measured in __ (A).

Amperes

Ohm's Law states that __ = I x V.

Resistance (R)

Resistance is a measure of how difficult the charges flow through a __.

material

The property of a material which determines its electrical resistance is called __.

resistivity

A fixed resistor limits the electric current in a circuit by absorbing the electric energy and converting it to __ energy.

heat

An electric circuit forms a __ for electrons to flow.

closed-loop/path

A magnet produces an invisible region around it called a __ field.

magnetic

Like magnetic poles __ each other and unlike magnetic poles attract each other.

repel

Magnetic field lines are conventionally drawn from the north seeking pole to the __ seeking pole.

south

The strength of the magnetic field is shown by the density of the field __.

lines

Ferromagnetic materials are objects that can be __ by magnets.

attracted

The continuous movement of electric charge is referred to as __.

electric current