An iron wire has a cross - sectional area of 5.00 x 10-6 m2.Carry out steps (a) through (e) to compute the drift speed ofthe conduction electrons in the wire. (a) How many kilogramsare there in 1 mole of iron? (b) Starting with the density of ironand the result of part (a), compute the molar density of iron(the number of moles of iron per cubic meter). (c) Calculatethe number density of iron atoms using Avogadro’s number.(d) Obtain the number density of conduction electrons giventhat there are two conduction electrons per iron atom. (e) Ifthe wire carries a current of 30.0 A, calculate the drift speed ofconduction electrons.

Q: A rod of length /=5 m and a square cros sectional area with side length of 1.5 cm is made of…

A:

Q: terial of resistivity 340000 · m into a shape of a hollow cylindrical shell of length 3 cm and inner…

A:

Q: 2*10^20 electrons flows through a cross section of an iron wire of diameter d=5.7mm in time t=13 s.…

A: Answer Given  Number of electrons n = 2×1020 electrons  Diameter d = 5.7 mm Radius r = d/2 = 2.85 mm…

Q: The Hall voltage for the metal sodium is 0.001 mV, measured at l=100mA, B=2Wb/m. And the thickness…

A: Given values: Hall voltage V = 0.001 mV Current I = 100 mA Magnetic field Bz = 2 Wb/m2 thickness d =…

Q: The amount of charge that passes through a system is given by Q(t), measured in coulombs. Current is…

A:

Q: What current flows through a 2.45-cm-diameter rod of pure silicon that is 21.5 cm long, when 1.00 x…

A: Given: The diameter of the wire is 2.45 cm. The length of the wire is 21.5 cm. The potential…

Q: A silver wire of radius re 0.5 mm and resistance 0.06 a ix connected to a voltage source of I.7 mV…

A: Given data: Radius, r=0.5 mm=0.5×10-3m Resistance, R=0.06 Ω Voltage, V=1.7 mV=1.7×10-3V Charge…

Q: A rectangular block of copper has sides of length 10. cm, 20. cm,and 40. cm. If the block is…

A: Given:Dimensions of a block of the copper = 10cm, 20cm and 40cm.Or Dimensions = 0.1m, 0.2m and…

Q: A length of metal wire has a radius of 5.00 x 10-3 m and aresistance of 0.100 Ω. When the potential…

A:

Q: A copper wire is 10 cm long and has a cross-sectional area of 0.4 mm^2 and the resistance of the…

A: Write the equation of Ohm’s law and substitute the required values to determine the value of…

Q: A silver wire of radius r0.5 mm and resistance 0.06 Q is connected to a voltage source of 1.6 mV.…

A: Solution: radisu r = 0.5 mmresistance R = 0.06 Ohmvoltage V= 1.6 mVcharge density, n =1.59x1028 m-3

Q: A 210-km-long high-voltage transmission line 2.0 cm in diameter carries a steady current of 1,060 A.…

A:

Q: A uniform cross-section of silver has a resistivity of 1.54 x 10-8 2 m at room temperature. For an…

A: Given data:  Resistivity of silver (ρ) = 1.54 × 10-8 Ω.m Electric field (E) = 1 Volt/cm Density of…

Q: Assume that each atom of copper contributes one free electron. What is the average drift velocity of…

A:

Q: A potential difference of 3.00 µV is set up across a 2.00 cm length of a wire (with resistivity of…

A:

Q: Estimate the average drift speed of the conduction electrons in a copper wire with a cross-sectional…

A: Given : A = 3.5 x 10-7 m2 I = 2.8 A n = 7 × 1028 m-3

Q: A copper wire has a circular cross section with a radius of 1.25 mm. (a) If the wire carries a…

A:

Q: What is the electric field of a material when the current is equal to 25A, the resistance is…

A: Write the given value of this problem. Current(I)=25 AResistance(R)=78 ohmCurrent density(J)=24…

Q: Two wires have the same resistance and radius. If the wires are made of tungsten and copper with…

A: Given data   The resistance of both the wires is equal to Rt = Rc The radius of both the wires rt =…

Q: Calculate the specific conductivity of the conductor in Mega(Ωm)-1 since the current passing through…

A:

Q: A copper wire of 3.2 mm in diameter and 4 m length carries a certain amount of current. The…

A:

Q: A metal object having a length (10m), cross section area (0.5 mm²), and resistance (0.50) is…

A:

Q: A conductor has a cross- sectional area of 2.3\( \times \)10-6 m2 and the number of free electrons…

A:

Q: Find the current flowing through a copper wire of length 20cm, area of cross section 1mm2, when…

A: Given: The length of the wire is 20 cm. The area of the wire is 1 mm2. The potential difference is 4…

Q: A 260-km-long high-voltage transmission line 2.0 cm in diameter carries a steady current of 1,180 A.…

A:

Q: 1.3 The current at the terminals of the element in Fig. 1.5 is i = 0, t 0. Calculate the total…

A: i =0, t<0 i= 20e-5000tA, t >= 0 i= dq/dt therefore, dq=idt integrating both sides t 0∫dq=0 t ∫…

Q: Calculate the value of intensity of current I Flows where the velocity drift of the charge carries.…

A: Given : vd = 2 × 10-4 m/s s = 5 mm2 = 5 × 10-6 m2 n = 5 × 1028 m-3

Q: The discharging current in the atmosphere due to the small conductivity of air is known to be 1800 A…

A: The discharging current in the atmosphere due to small conductivity of air is given to be 1800 A on…

Q: The electrical resistivity of copper (Cu) metal is po (T=20 °C) = 1.7 x 10* N•m at 20 °C. The…

A: The temperature dependence of the resistivity is given as,

Q: A 500-W heating coil designed to operate from 110 V is made of Nichrome wire 0.500 mm in diameter.…

A: a)

Q: A 70 Coulomb charge is flowing to a copper wire whose length is 2500 m and has a cross sectional…

A:

Q: A cylindrical conducting wire which is 173.67cm long, 45.65mm thick and resistivity of 7.70.m, (a)…

A:

Q: Every atom makes one free electron in copper. If 1.1 ampere current is flowing in the wire of copper…

A: Given data The magnitude of the current is I = 1.1 A The diameter of the copper wire is d = 1 mm = 1…

Q: Consider a conductor of length 69 millimeters and inner and outer diameters 7.98 millimeters and…

A:

Q: Show that, according to the free-electron model of electrical conduction in metals and classical…

A:

Q: A conductor has a cross-sectional area of 2.3x 10-6 m² and the number of free electrons per unit…

A: Given data: The area of conductor is A=2.3x10-6 m2. The free electrons are n=8.5x1028 e/m3. The…

Q: the rate of charge (q) flowing in a piece of copper wire is 0.0032 c at a cross -sectional surface…

A:

Q: A small current of 1.5x 10 10 A exists in a copper wire whose radius is 1.0 mm. The number of charge…

A:

Q: HWI When a current of 2 A flows for 3 micro-seconds in a coper wire, estimate the number of…

A: Given data: Current flow is, I=2 A. Time taken for current flow is, t=3 μs=3×10-6 s.

Q: What current flows through a 2.74 cm diameter rod of pure silicon that is 25.0 cm long, when 1000 V…

A: Solution: Given data, resistivity of pure silicon(p)=2.30×10³ ohm.m Length of rod (l)=25cm=0.25m…

Q: What is the resistance of a copper bus bar 9.15 meter long and 7.62 cm by 1.27 cm in cross section?…

A: Given data: Length (L) = 9.15 m Cross section area (A) = 7.62 cm × 1.27 cm Specific resistance (ρ) =…

Q: A cylindrical nickel wire of radius 2.0 mm and length 1.6 m has a potential difference of 12 volts…

A: Given data:  Radius (r) = 2.0 mm = 2.0x10-3 m Potential difference (V) = 12 V Resistance (R) = 4.0 Ω…

Microscopic view of current

In physics, the term current is expressed as the rate of flow of electric charges across the area per unit time (I=q/t). It propagates along in the direction of the motion of positive charges. When the current is caused by the motion of electrons, the direction of the current is opposite to the flow.