Question
Suppose you measure the terminal voltage of a 3.200-V lithium cell having an internal resistance of $5.00 \Omega$ by placing a $1.00 \textrm{ k}\Omega$ voltmeter across its terminals. (a) What current flows? (b) Find the terminal voltage. (c) To see how close the measured terminal voltage is to the emf, calculate their ratio.
1. $3.18 \textrm{ mA}$
2. $3.18 \textrm{ V}$
3. $0.995$
Solution Video