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The unit
of
measurement
of
electric
current.
It is
proportional
to the
quantity
of
electrons
flowing
through
a
conductor
past a
given
point in
one
second.
It is
analogous
to cubic
feet of
water
flowing
per
second.
In
physics,
the
ampere
(symbol:
A, often
informally
abbreviated
to amp)
is the
SI base
unit
used to
measure
electrical
currents.
The
present
definition,
adopted
by the
9th CGPM
in 1948
is: "one
ampere
is that
constant
current
which,
if
maintained
in two
straight
parallel
conductors
of
infinite
length,
of
negligible
circular
cross-section,
and
placed
one
metre
apart in
vacuum,
would
produce
between
these
conductors
a force
equal to
2 × 10−7
newton
per
metre of
length". |
