Draw a circuit diagram for the circuit of FIGURE EX28.2.

Suppose that you wish to apply a 0.25-V potential difference between two points on the human body. The resistance between those two points is about 1800 Ω, and you only have a 1.5-V battery. How can you connect up one or more resistors to produce the desired voltage? This is another example of a voltage divider (Problem 20).

At time t = 0, the switch in the circuit shown in Fig. 30–30 is closed. After a sufficiently long time, steady currents I₁, I₂, and I₃ flow through resistors R₁, R₂, and R₃, respectively. Determine these three currents.

When two resistors are connected in series, which physical quantity must be the same for both resistors?

Three resistors with resistances $R_1$ = $2$ $\Omega$, $R_2$ = $4$ $\Omega$, and $R_3$ = $6$ $\Omega$ are connected in series. What is the equivalent resistance of the resistor network?

Given four circuits, each containing three identical resistors of resistance $R$, which arrangement results in the smallest equivalent resistance?

Three resistors with resistances $R=2\Omega$, $R=4\Omega$, and $R=6\Omega$ are connected in series to a $12V$ battery. What is the current through the $4\Omega$ resistor?

What is the equivalent resistance of the following combination of resistors?