The conductive tissues of the upper leg can be modeled as a 35-cm-long, 11-cm-diameter cylinder of muscle and fat. The resistivities of muscle and fat are 13 m and 25 m, respectively. One person's upper leg is 82% muscle, 18% fat. Part A What current is measured if a 2.4 V potential difference is applied between the person's hip and knee?
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- Don't provide handwritten solution.Variations in the resistivity of blood can give valuable clues to changes in the blood's viscosity and other properties. The resistivity is measured by applying a small potential difference and measuring the current. Suppose a medical device attaches electrodes into a 1.5-mm-diameter vein at two points 5.0 cm apart. What is the blood resistivity if a 8.6 V potential difference causes a 240 μA current through the blood in the vein?What is the magnitude of the current density across A1? Is the current at A2 larger, smaller, or the same? Is the current density at A2 larger, smaller, or the same? Assume A2 = 2A1.
- A material is formed into a long rod with a square cross-section 0.50 cm on each side. When a 112 VV voltage is applied across a 20-mm length of the rod, a 4.0 AA current is carried. Part A What is the resistivity of the material? Express your answer using two significant figures.Part A A 5.1x10 V/m electric field creates a 3.5x1017 electrons/s current in a 2.0-mm-diameter aluminum wire. What is the drift speed? Express your answer using two significant figures. m/s = Pa Submit Previous Answers Request Answer X Incorrect; Try Again; 5 attempts remaining Part B What is the mean time between collisions for electrons in this wire? Express your answer using two significant figures.I Review The current supplied by a battery slowly decreases as the battery runs down. Suppose that the current as a function of time is I= (0.800 A le t/6hr Part A What is the total number of electrons transported from the positive electrode to the negative electrode by the charge escalator from the time the battery is first used until it is completely dead? ? electrons Submit Request Answer
- The current flowing through a resistor is measured at several differnet voltages. What is the value of the resistor? A. 0.05 B. 20 m C. 5 m D. 20The wires shown are all made of the same material; the length and radius of each wire are noted. Rank in order, from largest to smallest, the resistances R1 to R5 of these wires. Explain.E28. According to a safety code, the maximum allowable current for a 14 gauge copper wire (diameter, 1.628 mm) is 15 A, and it is 5 A for an 18 gauge wire (diameter 1.024 mm). What would be the potential difference between the ends of a 10m length of each type of wire for maximum current? ∆V14 = 1.23 V ; ∆V18 = 1.03 V Please show steps and formulas for my own understanding.