Assuming an electric current from left to right, find an expression for the resistance of this hollow truncated cone in terms of a, b, c, L, H, and rho. The x-axis goes through the center of the circles and is perpendicular to the base and the surface at x = -L. You must show ALL the steps, including the integral, to get credit.

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### Problem Statement

**Diagram Description:**
The diagram is of a hollow truncated cone oriented along the x-axis. The larger base of the cone is located at \( x = -L \) and the smaller base is located at \( x = H \). The x-axis goes through the center of both bases of the truncated cone.

- The y-axis is perpendicular to the x-axis.
- Several parallel and co-axial circles are shown indicating cross-sections of the hollow cone.
- Key dimensions indicated in the diagram are:
  - \( -c \) to \( c \) along the y-axis
  - \( -b \) to \( b \) along the y-axis
  - \( -a \) to \( a \) along the y-axis
- A thinner hollow section is noted within the truncated cone, indicated by dashed lines.

The parameter \(\rho\) represents the resistivity of the material.

**Task:**
Assuming an electric current flows from left to right along the x-axis, find an expression for the resistance of this hollow truncated cone in terms of \( a, b, c, L, H\) and \(\rho\). The x-axis is through the center of the circles and is perpendicular to the base at \( x = -L \). To receive credit, include all the steps of the calculation, including the integral.

**Procedure:**
1. **Understand the Geometry**: The resistance calculation involves understanding the changes in cross-sectional area as a function of the position \( x \) along the cone.
   
2. **Set Up the Integral**: Since resistivity \(\rho\) typically relates to resistance \( R \) through geometry, we must account for the varying cross-sectional area.

3. **Expression for Cross-Sectional Area**: Formulate the area at any point \( x \).

4. **Integrate Resistivity**: Use the integral form to calculate the total resistance, combining geometry and material properties.

Ensure to:
- Include the volume limit of integration from \( -L \) to \( H \).
- Derive and show the integral being used.
- Simplify the expression to relate it to the given parameters.
Transcribed Image Text:### Problem Statement **Diagram Description:** The diagram is of a hollow truncated cone oriented along the x-axis. The larger base of the cone is located at \( x = -L \) and the smaller base is located at \( x = H \). The x-axis goes through the center of both bases of the truncated cone. - The y-axis is perpendicular to the x-axis. - Several parallel and co-axial circles are shown indicating cross-sections of the hollow cone. - Key dimensions indicated in the diagram are: - \( -c \) to \( c \) along the y-axis - \( -b \) to \( b \) along the y-axis - \( -a \) to \( a \) along the y-axis - A thinner hollow section is noted within the truncated cone, indicated by dashed lines. The parameter \(\rho\) represents the resistivity of the material. **Task:** Assuming an electric current flows from left to right along the x-axis, find an expression for the resistance of this hollow truncated cone in terms of \( a, b, c, L, H\) and \(\rho\). The x-axis is through the center of the circles and is perpendicular to the base at \( x = -L \). To receive credit, include all the steps of the calculation, including the integral. **Procedure:** 1. **Understand the Geometry**: The resistance calculation involves understanding the changes in cross-sectional area as a function of the position \( x \) along the cone. 2. **Set Up the Integral**: Since resistivity \(\rho\) typically relates to resistance \( R \) through geometry, we must account for the varying cross-sectional area. 3. **Expression for Cross-Sectional Area**: Formulate the area at any point \( x \). 4. **Integrate Resistivity**: Use the integral form to calculate the total resistance, combining geometry and material properties. Ensure to: - Include the volume limit of integration from \( -L \) to \( H \). - Derive and show the integral being used. - Simplify the expression to relate it to the given parameters.
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