Why does resistance decrease when resistors are added in parallel?
1 Answer
May 6, 2018
Let's say that we have two resistors of ldngth
Resistance can be defined by:
#R# = resistance (#Omega# )#rho# = resistivity (#Omegam# )#l# = length (#m# )#A# = cross-sectional surface area (#m^2# )
Siince for
As the cross-sectional surface area increases, resistance decreases.
In terms of particle motion, this stands true, since the electrons have two paths to take, and combined, they have more space to flow through.