0%
0 / 15 answered
Electric Potential, Voltage, and Capacitance (4C) Practice Test
•15 QuestionsQuestion
1 / 15
Q1
An electrophysiology rig models a cell membrane as a capacitor. A membrane patch is approximated as $C=20\ \text{pF}$ and is initially at $V_m=-70\ \text{mV}$. A brief current pulse transfers $+2.0\ \text{pC}$ of charge onto the membrane capacitor (sign defined as increasing the inside potential). Based on $\Delta V=\Delta Q/C$, which outcome is most consistent with the change in electric potential? (Constants: $1\ \text{pC}=10^{-12}\ \text{C}$.)
An electrophysiology rig models a cell membrane as a capacitor. A membrane patch is approximated as $C=20\ \text{pF}$ and is initially at $V_m=-70\ \text{mV}$. A brief current pulse transfers $+2.0\ \text{pC}$ of charge onto the membrane capacitor (sign defined as increasing the inside potential). Based on $\Delta V=\Delta Q/C$, which outcome is most consistent with the change in electric potential? (Constants: $1\ \text{pC}=10^{-12}\ \text{C}$.)