▾ Part A A 1.40 m cylindrical rod of diameter 0.550 cm is connected to a power supply that maintains a constant potential difference of 12.0 V across its ends, while an ammeter measures the current through it. You observe that at room temperature (20.0° C) the ammeter reads 18.4 A, while at 92.0° C it reads 17.4 A. You can ignore any thermal expansion of the rod. For related problemsolving tips and strategies, you may want to view a Video Tutor Solution of Temperature dependence of resistance. Find the resistivity for the material of the rod at 20.0° C. Express your answer in ohm-meters. ΜΕ ΑΣΦ 0 ? p = Submit Previous Answers Request Answer Incorrect; Try Again; 4 attempts remaining Ω Part B Find the temperature coefficient of resistivity at 20.0°C for the material Express your answer in reciprocal degrees Celsius to two signific

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Ohm's law

Ohm’s law is a prominent concept in physics and electronics. It gives the relation between the current and the voltage. It is used to analyze and construct electrical circuits. Ohm's law states that the voltage across a conductor is directly proportional to the current flowing through it.

Path of Least Resistance

In a series of alternate pathways, the direction of least resistance is the actual or metaphorical route that offers the least resistance to forwarding motion by a given individual or body.