FYI
Ω
OHMS LAW
FOR VAPERS
Ohm’s Law is one of those things that you might have been taught at physics
or science class at school and dismissed as something that you would never
need to know about again.
For many people this may indeed
be true but if you are a vaper then,
suddenly, Ohms Law may actually
have meaning in your life.
The law says that the electric current
which passes between two points in an
electrical circuit is directly proportional
to the potential difference (voltage)
across those two points and inversely
proportional to the resistance.
If you build your own mods or if you are
just curious about how your equipment
works then an understanding of Ohms
Law would be very helpful indeed.
The law was named after the German
physicist Georg Ohm, and is generally
expressed today by the formula V = I/R
where:
V = the potential difference measured
across the conductor in volts
conductor in amperes and
R = the resistance of the conductor in
ohms.
The ohm (which was named after
resistance between two points of a
conductor when a constant potential
difference of 1 volt is applied to these
points to produce a current of 1 ampere
across the conductor.
154 VAPOUROUND MAGAZINE USA
So from simple maths we know that if V
= I xR then
I = V/R and
R = V/I.
So let’s apply this to the world of vaping.
When it comes to e-cigarettes the
resistance (R) is produced by the coils.
Increasing the resistance will make it
coils and reducing the resistance will
make it easier.
Wire thickness is very important too as
the resistance of the wire will decrease
as its thickness increases. Thus the
thinner the wire, the higher its resistance
will be.
Increasing the resistance leads to a
cooler vape while lowering the resistance
will provide warmer vape temperatures
because of the higher electrical current
through the coil. Some of the main
effects of changing the resistance of the
coil are as follows:
As the resistance of the coil is increased
it will:
produce a cooler tasting vape
produce less vapour
heat the coil more slowly
conserve battery life
use less e-liquid
As the resistance of the coil is decreased
it will:
produce a warmer tasting vape
produce more vapour
heat the coil faster
drain the battery faster
use more e-liquid
Also keep in mind that the resistance
produced by the e-liquid. Different liquids
react differently to changes in resistance
so it is important to know that the
resistance you choose could impact on
Thus many people like to lower the
resistance of the coil to give a more
happen by increasing the amount
This means that if you want even more
vapour then you would seek to lower the
resistance of the coil while increasing the
voltage across it. The main downside to
this is that it can seriously impact on the
life of your atomiser.
Because lower resistance coils use more
power, they tend to generate more heat
and this means they are likely to burn out