Which of the following is not true about ohmic materials? Select your answer. The magnitude of their current density depends on the electric field. Their resistivity has a constant value. They obey Ohm's Law. The specific resistance does not depend on the magnitude of the field.Which of the following equations correctly establishes the relation of variables that affect resistance? Select your answer. R = AL P R =PT R-PA RHow does electrical current ow in a conducting wire? Select your answer. from higher to lower electric potential from lower to higher electric potential depending on the resistivity of the wire depending on the crosssectional area of the wire What is the total resistance, in ohms, of a 30-meter roll of a 0.32-m2 copper wire? The resistivity of copper at 20"C is 1.72 x 10 0m. Select your answer. 1.83 x 10-10 5.58 x 108 2.20 x 10 9 1.61 x 10-6What is the specific resistance, in ohm-meters, of a conducting wire with length = 0.09 m and radius = 0.55 mm? Suppose that the wire's resistance is 14 0. Select your answer. 39.69 295-66 73-91 147.83Suppose that at 20.0 C, a tungsten resistance temperature detector recorded a resistance of 85.10 0. When subjected to a solution, this resistance became 113.45 0. What is the temperature, in "C, of the solution? Select your answer. 852.84 85.28 851.14 142.14An aluminum wire p = 2.?5 x IllS m has the same resistance as a copper wire ,6: = 1.?2 x IllS m of the same length. Wluch of the following statements is true about the two materials? Select your answer. Copper has a higher resistivity than aluminum. Copper has a larger diameter than aluminum. Copper has a lower conductivity than aluminum. Copper has a smaller crosssectional area than aluminum. [s it possible for two wires, one made of copper, and the other of aluminum, to contain the same resistance? Select your answer. No, the},7 have different resistivities, and hence, difference resistances. Yes, their lengths and areas ma],r be adjusted to produce the same resistance. No, one is a conductor and the other is a semiconductor. Yes, their resistivity may be adjusted to produce the same resistance. Given their respective resistivities, which of the following materials is the most suitable conductor? Select your answer. Tungsten = 5.6 x 10 80m Copper = 1.72 x 10 0m Carbon = (3 -60) x 10 0m Nichrome = 100 x 10 $0mConsider an electrical wire where all of its linear dimensions are doubled (i.e., length and radius). What will happen to its resistance when compared to its original value? Select your answer. It will have less resistance. It will have more resistance. Its resistance will randomly fluctuate. It will have the same resistance