Variations in the resistivity of blood can give valuable clues about changes in various properties of the blood. Suppose a medical device attaches two electrodes into a 1.0-mm-diameter vein at positions 5.1 cm apart. ▼ Part A What is the blood resistivity if a 9.0 V potential difference causes a 280 μA current through the blood in the vein? Express your answer in ohm-meters. [5] ΑΣΦ p= ? Ω · m

Q: A copper wire has a square cross section 2.3 mm on a side. The wire is 3.7 m long and carries a…

A: GIVEN Current   = 4 Amp Length of the side if square L = 2.3 mm = 2.3 x 10-3 M Density of the free…

Q: The copper wire with diameter 0.7 mm and 80 m long is connected to 15 V battery. Calculate the…

A: Given data:  Diameter (d) = 0.7 mm = 0.7×10-3 m Length (L) = 80 m Voltage (V) = 15 V Resistivity (ρ)…

Q: A copper transmission cable 170 km long and 12.0 cm in diameter carries a current of 145 A. Part A…

A: Givin :            There is a copper transmission cable having lenght L= 170 km            diameter…

Q: A piece of metal of volume 106 mm3 is used to make a coil 20.2 m long. What is the resistance (in Q)…

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Q: If the battery in the circuit below is 7.16V, resistor R1=331.15, and resistor R2=51.49N, what is…

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Q: A 5.50 m length of 1.9 mm -diameter wire carries a 780 mA current when 23.0 mV is applied to its…

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Q: Part A ΔΙ 210 Ω 15 Ω

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Q: A 20.0-m-long cable consists of a solid-inner, cylindrical, nickel core 12.0 cm in diameter…

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Q: A human being can be electrocuted if a current as small as 53 mA passes near the heart. An…

A: We can use ohm's law to find voltage

Q: A potential difference of 2.0 V is applied across a cylindrical conductor. The conductor is 20.0 m…

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Q: Variations in the resistivity of blood can give valuable clues to changes in the blood's viscosity…

A: Given: The diameter of the vein is 1.5 mm. The distance between the points is 5.0 cm. The potential…

Q: What is the resistance (in units of 0) of a wire made of a material with a resistivity of 3.2 x 108…

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Q: High-resolution measurements have shown that an ion channel (see the attached problem) is a…

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Q: Variations in the resistivity of blood can give valuable clues about changes in various properties…

A: Given data:  Diameter (d) = 1.5 mm Length (L) = 5.5 cm Voltage (V) = 9.0 V Current (I) = 220 μA…

Q: ong wire is made of a metal with the same electron density as copper. The wire ed across the…

A: L=1.5mV=9v

Q: A Christmas tree ornament has a diameter of 8.0 cm, and has a shiny mirrored surface. If a…

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Q: in an ionic solution, a current consists of Ca²+ ions (of charge +2e) and Clions (of charge -e)…

A: Number of  Cl- ions going from A to B in time "t"  is…

Q: R1 = 40 Calculate the current in the circuit. What is the potential difference between Vb and Va…

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Q: Table 2. Resistance of conductor for different cross-sectional areas D (cm) | A(cm?) Length (cm) | I…

A: The resistance of any wire is the ratio of the voltage across the wire to the current passing…

Q: Find the current through the resistor ?1 given that ?=12.0V, ?1=4.73Ω, ?2=9.46Ω, ?3=23.65Ω, and…

A: The equivalent resistance of the resistors R2,R3,R4 connected in parallel is given by,…

Q: A 14 gauge copper wire of diameter 1.628 mm carries a current of 10.5 mA. (ρcopper=1.72×10−8Ω⋅m.)…

A: Write the given values with the suitable variables. d=1.628 mm=1.628×10-3 mI=10.5 mA=10.5×10-3…

Q: aws 7.0 kW, what is the current delivered to the motor? Answer in units of A. 012 (part 2 of 2) If…

A: Part 1: The Power as, P=VI

Q: A copper transmission cable 200 km long and 12.5 cm in diameter carries a current of 150 A. For…

A: Length of cable                       L = 200 km = 200000  m  Diameter of cable…

Q: Node 1 12 Node 2 1. The current II is equal to 2. The current 12 is equal to 3. The current 13 is…

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Q: A ribbon of nichrome (resistivity of (0.25 mm x 1.00 mm) will be used as a heating element in a…

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Q: A 12.0 [V] battery with an internal resistance of 2.00[22] is linked to a 4.00[22] external resistor…

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Q: You've made the finals of the Science Olympics! As one of your tasks, you're given 1.5 g of copper…

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Q: A typical lightning bolt may last for 0.197 s and transfer 1.09 x 1020 electrons. Calculate the…

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Q: A television set connected to a 120 V outlet consumes 35 W of power. Part A How much current flows…

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Q: Find the current through the resistor R3 given that V=12.0V, R1=4.73Ω, R2=9.46Ω, R3=23.65Ω, and…

A: Given data The potential difference across the battery is V = 12 V The magnitude of the resistance…

Q: In the figure,&₁ = 6.00 V, &- 12.0 V, R₁ = 100 2, R₂ = 200 £2, and R3 = 300 2. What are the (a) size…

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Q: A copper wire with a circular cross-section has a mass of 1.20 g and a resistance of 0.590 2. At…

A: Given: Mass of wire is m=1.20 g Resistance of wire is R=0.590 Ω At temperature T=20°C, resistivity…

Q: A current of 1 A flows through a copper wire. Number of electrons which will pass a given point in…

A: Given,current i = 1Awe have to find the no of electrons that pass through a given point in one…

Q: The mean time between collisions in iron is 4.8x10-15 s. Part A What electron current is driven…

A: Given:-  The mean time between the collision in iron  t= 4.8 x 10-15 Sec  The diameter of the iron…

Q: Part A A length of aluminum wire is connected to a precision 10.00-V power supply, and a current of…

A: Solution:-

Q: The tungsten filament of a lightbulb has a resistance of 8x10-². Part A If the filament is 28 cm…

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Q: Given the voltage sources e₁=20 V, e2=5 V, and the resistances R₁=1000, R₂-3000 and R3=5002, find…

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Q: A block in the shape of a rectangular solid has a cross-sectional area of 4.91 cm? across Its width,…

A: Given: Area, A=4.91cm2=4.91×10-4m2Length, L=12.2cm=12.2×10-2mResistance, R=1020ΩConcentration of…

Q: How much current flows through a 69.0-m length of copper wire with radius 6.9 mm if it is connected…

A: Write the given values with the suitable variables. L=69 mr=6.9 mm=6.9×10-3 mV=10 Vρ=1.68×10-8 Ω m…

Q: An electric device draws 7.50 A at 240 V. Part A If the voltage drops by 11 % , what will be the…

A: Given: Current, Iinitial=7.50 A Potential, Vinitial=240 V PART A: OHM'S LAW is given as; V=IR So,…

Q: Wires 1 and 2 are made of the same metal. Wire 2 has twice the length and twice the diameter of wire…

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Q: E. The conductive tissues of the upper leg can be modeled as a 40-cm-long, 12-cm-diameter cylinder…

A: Solution:-Given thatLength (L)=40 cm=0.4 mdiameter (d)=12 cm=0.12 mResistivity of muscle=13…

Q: A gold wire 5.45 m long and of diameter 0.890 mm carries current of 1.25 A. For related…

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Q: A 16.0-m length of wire consists of 7.0 m of copper followed by 9.0 m of aluminum, both of diameter…

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Q: Find the resistance between the inner and the outer curved surfaces of the block shown below, where…

A: Resistance is the opposition to flow of current and is given by, R=VI But we know, V=∫E·dlI=∫SJ·ds…

Q: In the Bohr model of the hydrogen atom, an electron in the 4th excited state moves at a speed of…

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Q: Part C Find the current through the 20 ΩΩ resistor. Part D Find the potential difference across…

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Q: Assume that & = 60.0 V. The battery has negligible internal resistance. Figure + E 3.00 Ω 12.0 Ω…

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Q: In the circuit below, Vo = 27 V, V₁ = 11 V, R₁ = 82, & R₂ = 32. Determine the current through R₁,…

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Q: A current of 6.O A flows through an electrical device for 10 seconds. How many electrons flow…

A: Given, Current, i=6A Time, t=10s Electron charge, e=1.6×10-19C Let the number of electrons flow is…

Resistivity

Resistivity is a characteristic property of the conductor’s material that measures the extent to which the material opposes the flow of current. It is denoted by the Greek letter “rho”. Electrical resistivity, also known as specific resistance, depends on the nature of the material of the conductor and is unaffected by its dimensions.