The resistivity of a material depends on the temperature. Equation (25-5) in the

Question

The resistivity of a material depends on the temperature. Equation (25-5) in the textbook shows how to calculate the resistivity at a given temperature and Table 25-1 contains values for the temperature coefficient of resistivity.

For tungsten, what is the resistivity at 520 oC

The resistivity of a material depends on the temperature. Equation (25-5) in the textbook shows how to calculate the resistivity at a given temperature and Table 25-1 contains values for the temperature coefficient of resistivity. For tungsten, what is the resistivity at 520 °C? 0 1.3x10-7 ohm.m (an) 0 1.7x10-8 ohmm (am) 2.5×10-8 ohrm.m(Am) 1.3x10 ohm.m (2.m) 1.8x10 ohm.m (2.m)

Explanation / Answer

Here, Rt = 5.6 * 10-8( 1 + 0.0045 * (520 - 20))

                =   5.6 * 10-8( 3.25)

                = 1.8 * 10-7    ohm-m              ----------------> resistivity at 520 degree celsius

Related Questions

Navigate

• Browse (All)
• Browse T
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.