![A steel wire is 4.0 m long and 2 mm in diameter. Young's modulus of steel is 1.96 xx 10^(11) N//m^(2). If a ma A steel wire is 4.0 m long and 2 mm in diameter. Young's modulus of steel is 1.96 xx 10^(11) N//m^(2). If a ma](https://doubtnut-static.s.llnwi.net/static/web-thumb/647967140_web.png)
A steel wire is 4.0 m long and 2 mm in diameter. Young's modulus of steel is 1.96 xx 10^(11) N//m^(2). If a ma
![A 3-mm-diameter and 5-m-long electric wire is tightly wrapped with a 2-mm thick plastic cover whose thermal conductivity is k = 0.15 W/m·K. Electrical measurements indicate that a current of 10 A A 3-mm-diameter and 5-m-long electric wire is tightly wrapped with a 2-mm thick plastic cover whose thermal conductivity is k = 0.15 W/m·K. Electrical measurements indicate that a current of 10 A](https://holooly.com/wp-content/uploads/2021/04/39-2.png)
A 3-mm-diameter and 5-m-long electric wire is tightly wrapped with a 2-mm thick plastic cover whose thermal conductivity is k = 0.15 W/m·K. Electrical measurements indicate that a current of 10 A
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