Passive membrane decay assive-decay rate A.>0 scales the rate to the membrane 's resting potential solution: X(=X(0)6 Passive-decay rate measures the cell membrane's resistance or“ friction” to current flow 2002.10.82002.10.8 Passive Membrane Decay Passive-decay rate Ai  0 scales the rate to the membrane’s resting potential. solution : At i i i x t x e − （ ）= （0） Passive-decay rate measures: the cell membrane’s resistance or “friction” to current flow. i i i x = −A x •