Why is the resistance in the electric pen very high?

Why is the resistance in the electric pen very high?

If the resistance of the electric pen is not large enough, the high voltage current will pass through the user's body and cause harm to the person

How to convert conductivity US / cm to MS / M

ms=10^3us
m=10^2cm
ms/m=10^3us/10^2cm=10 us/cm
us/cm= 10^-1 ms/m

μS/cm
For example, 500 μ s / cm focuses on μ s

Greek alphabet
Fallacy
Μ
Mu is the twelfth Greek letter
Small μ for:
Arithmetic mean
"Micro", one in a million, used to be used in micron (now micron is represented by & micro; m)
Electrical permeability
In particle physics, the symbol of the infinitesimal
friction coefficient
The Unicode of μ is U + 03bc, and there is another symbol that used to represent "micron" & micro;, and the Unicode code is U + 00b5
Both the Cyrillic letter M and the Latin letter M evolved from mu

The meaning of conductivity unit US / cm

The conductivity of aqueous solution refers to the ability to carry current through the movement of ions. The conductivity increases with the increase of temperature. The conductivity is also affected by the shape, quantity and viscosity of ions in the solution itself. The two parameters change with the change of temperature, and the change of temperature is accompanied by the change of conductivity
Us / cm medium
S is the unit of conductance, denoted as "Simon", s = 1 / Ω
Us / cm is recorded as "weiximen per centimeter"