2
answers
2
watching
1,087
views
8 Mar 2018
25.11 - A 1.50-m cylindrical rod of diameter 0.500 cm is con- nected to a power supply that maintains a constant potential dif- ference of 15.0 V across its ends, while an ammeter measures the current through it. You observe that at room temperature (20.0°C) the ammeter reads 18.5 A, while at 92.0°C it reads 17.2 A. You can ignore any thermal expansion of the rod. Find (a) the resistiv- ity at 20.0°C and (b) the temperature coefficient of resistivity at 20 C for the material of the rod.
25.11 - A 1.50-m cylindrical rod of diameter 0.500 cm is con- nected to a power supply that maintains a constant potential dif- ference of 15.0 V across its ends, while an ammeter measures the current through it. You observe that at room temperature (20.0°C) the ammeter reads 18.5 A, while at 92.0°C it reads 17.2 A. You can ignore any thermal expansion of the rod. Find (a) the resistiv- ity at 20.0°C and (b) the temperature coefficient of resistivity at 20 C for the material of the rod.
Read by 3 people
Jarrod RobelLv2
8 Mar 2018
Already have an account? Log in
