Magnetism and magnetic fields

Beschrijving

Forces at a distance are explained by fields (gravitational, electric, and magnetic) permeating space that can transfer energy through space. Magnets or electric currents cause magnetic fields; electric charges or changing magnetic fields cause electric fields.

Taal
English
Type bron
Uitgever
Khan Academy
Publicatiedatum
Schepper/Auteur
Sal Khan

Electric field definition

Beschrijving

The idea of the electric field, how it's useful, and explains how the electric field is defined.

Taal
English
Type bron
Uitgever
Khan Academy
Publicatiedatum
Schepper/Auteur
Sal Khan

Magnets and magnetic fields

Beschrijving

Magnetism is an interaction that allows certain kinds of objects, which are called ‘magnetic’ objects, to exert forces on each other without physically touching. A magnetic object is surrounded by a magnetic ‘field’ that gets weaker as one moves further away from the object. A second object can feel a magnetic force from the first object because it feels the magnetic field of the first object. The further away the objects are the weaker the magnetic force will be.

Taal
English
Type bron
Uitgever
Department of Higher Education
Publicatiedatum
Schepper/Auteur
Leigh Kleynhans