SUMMARY
The resistance of a bobbin at 0 degrees Celsius is 3.35 ohms. Using the formula R1=R0[1+alpha(t-t0)], where alpha is the thermal constant of 0.0037, the calculated resistance at 50 degrees Celsius is 3.96975 ohms. Rounding this value to two significant figures yields approximately 4.0 ohms, which differs from the book's stated answer of 4.06 ohms. The discrepancy suggests a potential rounding or calculation error in the reference material.
PREREQUISITES
- Understanding of electrical resistance and temperature coefficients
- Familiarity with the formula R1=R0[1+alpha(t-t0)]
- Basic knowledge of significant figures in numerical calculations
- Concept of thermal constants in materials
NEXT STEPS
- Review the calculation of resistance using temperature coefficients
- Learn about the impact of temperature on electrical resistance in materials
- Explore rounding rules and significant figures in scientific calculations
- Investigate common discrepancies in textbook answers and practical calculations
USEFUL FOR
Students studying electrical engineering, physics enthusiasts, and anyone interested in the effects of temperature on resistance in conductive materials.