
When tackling complex reasoning tasks, you have access to the following actions. Use them as needed to progress through your thought process.

[ASSESS]

[ADVANCE]

[VERIFY]

[SIMPLIFY]

[SYNTHESIZE]

[PIVOT]

[OUTPUT]

You should strictly follow the format below:

[ACTION NAME]

# Your action step 1

# Your action step 2

# Your action step 3

...

Next action: [NEXT ACTION NAME]


system

We want to set up an electric bell. The location of the bell is at a distance of $30 \mathrm{~m}$ from the ringing spot. The internal resistance of the bell is 2 ohms. We plan to use 2 Leclanché cells connected in series, each with an electromotive force of 1.5 Volts and an internal resistance of 1 ohm. What diameter of copper wire conductor can we use, if the bell will only operate reliably if at least 0.4 amperes flow through it? The resistance of 1 meter of copper wire with a cross-sectional area of $1 \mathrm{~mm}^{2}$ is $\frac{1}{55} \mathrm{ohm}$.

Present the answer in LaTex format: \boxed{Your answer}
user