A variable-resistance element exhibiting high wear resistance and superior microlinearity
includes a resistor constituted from a first resistive layer containing a first
reinforcing material and a second resistive layer containing conductive carbon
black and a second reinforcing material, the second resistive layer being disposed
on the first resistive layer. The first reinforcing material is pulverized carbon
fibers having an average particle size of 3 m. The second reinforcing material
is thermal black having an average particle size of 0.35 m.
