Current and Resistance Problem 17:   An unknown wire in a circuit has a circular cross-section with diameter 2.5 mm. It carries a current of 8.8 mA. Part (a)  What is the current density, in milliamperes per square centimeter, in this wire?   Part (b)  If you assume the drift velocity in this wire is 1 × 10-2 cm/s, what is the density of charge carriers per cubic centimeter? Part (c)  If the conductivity in this wire is 1.5 × 106 Ω-1 m-1, what is the average time between collisions, in nanoseconds?

Q: A wire 3.31 m long and 4.92 mm in diameter has a resistance of 13.2 m2. A potential difference of…

A: given that length of wire L = 3.31 m diameter of wire d = 4.92 mm then radius r = 2.46 mm  potential…

Q: current of I = 4.6 A is passing through a conductor with cross sectional area A = 3.5 × 10-4 m2. The…

A: Given  Current I = 4.6 A   Cross sectional area A =3.5 × 10-4 m2   Number density n =1.2 × 1027…

Q: What is the drift speed?

A: Given: Electric field is E=1.7×10-3 V/m Current in wire is I=3.5×1017 elec/s Diameter of wire is…

Q: a) The amount of charge that passes through a copper wire in 5.4 s is 2.37 C. Find the current in…

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Q: Suppose a medical device attaches electrodes into a 1.5-mm -diameter vein at two points 5.0 cm…

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Q: charge of Q = 1.2 C passes through a wire every t = 1.5 s. Part (a)  Input an expression for the…

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Q: A 100-m-long copper wire of radius 0.24 mmmm and mass 160 g is connected across a 1.5-V battery. The…

A: Given: length, l=100 m radius, r=0.24 mm=0.24×10-3m voltage, V=1.5 V resistivity, ρ=1.7×10-8Ω⋅m

Q: The resistance of gold wire used in circuits is usually negligible compared to the components in the…

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Q: -a-Two wires have the same diameter and same resistance. If one is made of silver and the other is…

A: Here question a and b are not inter-connected. Hence this is a multiple type question and in this…

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: 6. Three copper conductor rods have length, diameter and potential difference between the ends as…

A: A) For the rod 1, Length is L, Diameter is 3d and Potential difference is V Electric  field is given…

Q: In a wire with a 2.63 mm² cross-sectional area, 5.51 × 1020 electrons flow past any point during…

A: Given data:  Cross sectional area (A) = 2.63 mm2 = 2.63×10-6 m2 Number of electrons (n) = 5.51×1020…

Q: 5. An iron wire has a cross-sectional area of 5.00 x 10-6m². Carry out the following steps to…

A: Given data The cross-sectional area of the wire is: A = 5 x 10-6 m2 The current in the wire is: I =…

Q: Problem 1: The conductive tissues of the upper leg can be modeled as a 40-cm-long, 12-cm-diameter…

A: Given that: Length, L=40 cm=0.40 mDiameter, D=12 cm=0.12 mRadius, R=6 cm=0.06 mResistivity of…

Q: - C are 2.0 x 10-6 n·m and 1.00 wires are joined as shown in the F

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Q: An aluminum wire 1.291 mm in diameter (16-gauge) carries a current of 3 amps. Overall Hint a. What…

A: The diameter of the Aluminium wire, d=1.291 mm The current flowing through the wire, i=3 A

Q: A fuse in an electric circuit is a wire that is designed to melt, and thereby open the circuit, if…

A: A fuse in an electrical circuit is a wire that is designed to melt if the current density rises 520…

Q: A stun gun or TASER is designed to put out a few seconds worth of electric pulses that impress a…

A: Given : voltage = V = 1200 V current = i = 3 mA = 0.003 Amp resistance = R = ?

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: An aluminum wire of radius 1.00 mm carries a current of 1.00 mA. The density of aluminum is…

A: Given that:An aluminium wire has,r=1.00 mmI=1.00 mAρ=2.70×103 kg/m3Molar mass=26.98 g==26.98×10-3…

Q: An aluminum wire 2.053 mm in diameter (12-gauge) carries a current of 1.5 amps. Overall Hint a. What…

A: The number density is found as n=ρM×NA Here ρ,M,NA are mass density, molar mass and Avogadro number…

Q: 1. A silver wire 2.6 mm in charge of 420 C i Silver contains free electrons transfers a

A: GivenDiameter of silver wire, d=2.6 mmCharge, q=420 CTime, t=80 minSilver contain free elctrons ,…

Q: An aluminum wire with a diameter of 0.095 mm has a uniform electric field of 0.215 V/m imposed along…

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Q: Problem 2: Suppose you have a 2.2 cm diameter rod of pure silicon that is 22 cm long. > A What…

A: Given: The length of the wire is 22 cm. The diameter of the wire is 2.2 cm. The resistivity of the…

Q: Copper wire 1.5 m long has a current of 150 AMperes go through it for .70 seconds/ The wires…

A: the current through wire in terms of drift velocity can be expressed as I=neAvd

Q: A 220 ohm resistor has a diameter of 4.0 mm. If 1.0 C of charge moves through the resistor in 1.0…

A: The objective of this question is to calculate the uniform current density in a resistor given the…

Q: The unspecified currents in (Figure 1) are IA = 3 A and ID = 3 A. The directions of the currents are…

A: The current in both parts have been calculated with explanation. If any doubt please feel free to…

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: Measurements made during severe electrical storms reveal that lightning bolts can carry as much as…

A: Charge (Q) = 30 C Time (t) = 100 μsV = 400 million volts