2.1 A piece of wire l cm long carries a current I when a voltage V is applied across its ends at a temperature of 0°C. If the resistivity of the material of which the wire is made varies as shown in the figure, what length of the same diameter wire is needed so that the same current flows when the same voltage is applied at temperature 400°C? 12 10 200 400 600 800 1000 Temperature ("C) Resistivity (10 Qm)
2.1 A piece of wire l cm long carries a current I when a voltage V is applied across its ends at a temperature of 0°C. If the resistivity of the material of which the wire is made varies as shown in the figure, what length of the same diameter wire is needed so that the same current flows when the same voltage is applied at temperature 400°C? 12 10 200 400 600 800 1000 Temperature ("C) Resistivity (10 Qm)
Chapter9: Current And Resistance
Section: Chapter Questions
Problem 14CQ: The current I is measured through a sample of an ohmic material as a voltage V is applied, (a) What...
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