Current through the ammeter:

$\overline{){\mathbf{i}}{\mathbf{=}}\frac{\mathbf{\epsilon}}{\mathbf{r}}}$

Terminal voltage:

$\overline{){\mathbf{V}}{\mathbf{=}}{\mathbf{\epsilon}}{\mathbf{-}}{\mathbf{i}}{\mathbf{r}}}$

**Part A**

For an ideal ammeter, the resistance is zero.

An idealized ammeter is connected to a battery as shown in the figure (Figure 1).

Part A. Find the reading of the ammeter.

Part B. Find the current through the 4.00-Ω resistor.

Part C. Find the terminal voltage of the battery.

Frequently Asked Questions

What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the Kirchhoff's Loop Rule concept. You can view video lessons to learn Kirchhoff's Loop Rule. Or if you need more Kirchhoff's Loop Rule practice, you can also practice Kirchhoff's Loop Rule practice problems.