A simple electric circuit, where current is
represented by the letter i. The relationship
between the voltage (V), resistance (R),
and current (I) is V=IR; this is known as
An electric current is a ow of electric charge. In electric circuits th
For other uses, see Magnetic eld (disambiguation).
Magnetic eld of an ideal cylindrical
magnet with its axis of symmetry inside
the image plane. The magnetic eld is
represented by magnetic eld lines, which
show the direction of the eld at dierent
"Electric" redirects here. For other uses, see Electric (disambiguation) and Electricity
Lightning is one of the most
dramatic eects of electricity.
Electricity is the set of physical phenomena associated with the
presence and ow of elec