SUMMARY
The current in a 60.0-cm-long hollow nichrome tube with an inner diameter of 1.10 mm and an outer diameter of 4.20 mm connected to a 3.00 V battery can be calculated using the resistance formula R = ρ * L / A. The resistivity of nichrome is 1.5 x 10-6 ohm meters. The area A is determined by the formula A = π * (outer radius - inner radius)2. After calculating resistance, the current can be found using I = V / R.
PREREQUISITES
- Understanding of electrical resistance and Ohm's Law
- Familiarity with the concept of resistivity
- Ability to calculate the area of a circular cross-section
- Knowledge of basic geometry for calculating inner and outer radii
NEXT STEPS
- Calculate the resistance of the hollow nichrome tube using R = ρ * L / A
- Learn how to derive the area A for hollow cylindrical shapes
- Explore the implications of resistivity in different materials
- Study the effects of voltage on current in electrical circuits
USEFUL FOR
Students studying physics, electrical engineers, and anyone interested in understanding current flow in conductive materials.