A rod (length = 40 cm) with a rectangular cross section (1.5 mm X2.0 mm) has a resistance of 0.20 ΩΩ. What is the resistivity of the material used to make the rod? Select one: a. 30X10-7 b. 15X10-7 c. 60X10-7 d. 7.5X10-7

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A: Note: As per criterion of Bartleby, only three parts (a), (b) and (c) would be solved here.…

Q: In recent years, investigators have explored alterations in brain activity due to the passage of a…

A: given: E=1.0 V/mI=1.0 mA =1.0*10-3 AA=2.5*10-3 m2

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A: Given,

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A:

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A: Ohm's law is defined as V=IR Here V is the potential difference, I  is current and R is resistance.

Q: According to the figure, how many A is the current flowing through the 9 V battery?

A:

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A: We know that slope of V-I graph gives the resistance of the object.

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A: *We'll answer only the first three sub-parts since the sub-parts to be answered were not specified.…

Q: A 1.50 m cylindrical rod of diameter 0.500 cm is connected to a power supply that maintains a…

A: Given  Voltage across the rod,  V = 15.0 V Length of rod, L = 1.5 m = 150 cm, Diameter, d = 0.50 cm,…

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A: We are allowed to give the explanation of first question only which is given below.  Please repost…

Q: question number 2

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A: resistivity p= 2.8×10-8 Ohm m l= 10 km= 10000 m A=4.9×10-4 m2 let the resistance of a wire of given…

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A: 9.  Given: Material has a positive temperature coefficient

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A: resistivity of aluminum be=  p =2.8×10-8 Ωm A=4.9×10-4m2 l= 10 km= 10000 m let resistance be R

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A: The resistivity of a wire of resistance R, length L' and radius r' is given as. ρ=R.AL'2=R.πr'2L'2

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Q: 26.5 • A triangular array of resistors is shown in Fig. E26.5. What current will this array draw…

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Q: EKU Blackboard Content https://eku.blackboard.com 7. SERCP11 18.3.P.008. A My Notes Ask Your Teacher…

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Temperature Variance of Resistance

Electrical resistance or simply resistance is the property of a material that opposes the free flow of electrons through it. The total amount of resistance to the flow of charges (or current) is affected by many factors like the length of the conducting material, its cross-sectional area, resistivity, and temperature.