Memristor

Persamaan ini menyatakan bahwa memristansi didefinisikan hubungan linear antara arus dan tegangan, selama tegangan tidak divariasikan. Of course, nonzero current implies instantaneously varying charge. Alternating current, however, may reveal the linear dependence in circuit operation by inducing a measurable voltage without "net" charge movement—as long as the maximum change in "q" does not cause much change in "M".