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4. (13 pts) A copper wire with conductivity oc5.8 x 107 is connected to a brass...
A copper wire 10 m long must experience a voltage drop of less than 1.0 V...
A copper wire 10 m long must experience a voltage drop of less than 1.0 V when a current of 3.0 A passes through it. Using the data in Table 12.1, compute the minimum diameter of the wire. Table 12.1 Room-Temperature Electrical Conductivities for Nine Common Metals and Alloys Metal Electrical Conductivity (22-m)!) Silver 6.8 * 107 Copper 6.0 x 107 Gold 4.3 x 107 Aluminum 3.8 x 107 Brass (70 Cu-30 Zn) 1.6 × 107 Iron 1.0 x 107...
help resolve 5. (10 pts.) The temperature of a copper wire (a = 3.9 x 10-'K')...
help resolve
5. (10 pts.) The temperature of a copper wire (a = 3.9 x 10-'K') with a resistance of 100 is increased by 25 K (a) The resistance will increase or decrease? (b) What is the resistance after temperature increased by 25 K? 6. (10 pts.) A copper wire has a radius 0.5 mm and free electron density 8.5 x 10 and it carries current 1.8 A. Calculate the current density and the drift velocity of the copper wire....
The conductivity of silver is o = 6.17 x 107 S/m and that of porcelain is...
The conductivity of silver is o = 6.17 x 107 S/m and that of porcelain is o = 1.0 X 10-14 S/m. A. If a voltage of 1 V is placed across a silver plate of 1 cm thickness, find the current density through it. B. Repeat for a porcelain plate of the same thickness and compare the results. C. Find the current through each material if the samples have a circular dimeter of 1 cm. D. Find the resistance...
For a metal that has an electrical conductivity of 7.1 x 107 (-m)-1, do the following:...
For a metal that has an electrical conductivity of 7.1 x
107 (-m)-1,
do the following:
(a) Calculate the resistance (in
) of a wire 2.6 mm in diameter and 6.7 m long.
(b) Calculate the current (in A) if the potential drop across
the ends of the wire is 0.060 V.
(c) Calculate the current density (in A/m^2).
(d) Compute the magnitude of the electric field (in V/m) across
the ends of the wire.
A copper wire has cross section area 0.002 m' and length of 400 m, what is...
A copper wire has cross section area 0.002 m' and length of 400 m, what is the resistance of this copper wire? When a 200-V potential difference is applied over the wire, what is the current through the wire and what is the electric power? If the current is uniformly distributed, what is the current density? If the drift speed is 10 m/s, what is the number density of electrons in the wire? (Given copper's resistivity as 2x10 s2 m)....
A current of 2.31 A flows through a 1.11 mm diameter copper wire that is connected...
A current of 2.31 A flows through a 1.11 mm diameter copper wire that is connected to a capacitor plate. The current is directed toward the plate. Find the charge transferred to the plate in 9.10 x 10-4 s.
The figure shows wire section 1 of diameter D,-5.50R and wire section 2 of diameter D2-3.00R, connected by a tapered section. The wire is copper and carries a current. Assume that the current is unif...
The figure shows wire section 1 of diameter D,-5.50R and wire section 2 of diameter D2-3.00R, connected by a tapered section. The wire is copper and carries a current. Assume that the current is uniformly distributed across any cross-sectional area through the wire's width. The electric potential change Valong the length L-1.50 m shown in section 2 is 13.0 μν. The nurmber of charge carriers per unit volume is 820x 1028 m3. What is the drift speed of the conduction...
A thick copper wire 2.3 m long is connected in series to a thin high-resistance Nichrome...
A thick copper wire 2.3 m long is connected in series to a thin high-resistance Nichrome wire. In the steady state, the conventional current in the thick copper wire is 4 amperes. In this copper wire there are 8 � 1028 mobile electrons per cubic meter and the electron mobility is 4.5 � 10?3 (m/s)/(V/m). The cross-sectional area of the copper wire is 6 � 10?7 m2. The thin high-resistance Nichrome wire (which is connected in series to the thick...
The maximum rated current for a copper wire of cross-sectional area 2 mm^2 is 20A. (a)...
The maximum rated current for a copper wire of cross-sectional
area 2 mm^2 is 20A. (a) What is the corresponding current density
in A/m^2? (b) On the assumption that each copper atom contributes
one conduction electron, calculate the electronic drift velocity
corresponding to this current density. (Avogadro's number =
6.02E10^23 atoms per mole; atomic weight of copper = 63.5; density
of copper = 8.92 g/cm^3.) (c) Use the observed conductivity to
calculate the average collision time for an electron in...
Strands of copper wire from a manufacturer are analyzed for strength and conductivity. The results from...
Strands of copper wire from a manufacturer are analyzed for strength and conductivity. The results from 100 strands are as follows: High Strength Low Strength High conductivity 73 Low conductivity12 4 a) If a strand is randomly selected, what is the probability that its conductivity is high and its strength is high? Round your answer to two decimal places (e.g. 98.76) b) If a strand is randomly selected, what is the probability that its conductivity is low or the strength...
A copper wire 10 m long must experience a voltage drop of less than 1.0 V when a current of 3.0 A passes through it. Using the data in Table 12.1, compute the minimum diameter of the wire. Table 12.1 Room-Temperature Electrical Conductivities for Nine Common Metals and Alloys Metal Electrical Conductivity (22-m)!) Silver 6.8 * 107 Copper 6.0 x 107 Gold 4.3 x 107 Aluminum 3.8 x 107 Brass (70 Cu-30 Zn) 1.6 × 107 Iron 1.0 x 107...
help resolve
5. (10 pts.) The temperature of a copper wire (a = 3.9 x 10-'K') with a resistance of 100 is increased by 25 K (a) The resistance will increase or decrease? (b) What is the resistance after temperature increased by 25 K? 6. (10 pts.) A copper wire has a radius 0.5 mm and free electron density 8.5 x 10 and it carries current 1.8 A. Calculate the current density and the drift velocity of the copper wire....
The conductivity of silver is o = 6.17 x 107 S/m and that of porcelain is o = 1.0 X 10-14 S/m. A. If a voltage of 1 V is placed across a silver plate of 1 cm thickness, find the current density through it. B. Repeat for a porcelain plate of the same thickness and compare the results. C. Find the current through each material if the samples have a circular dimeter of 1 cm. D. Find the resistance...
For a metal that has an electrical conductivity of 7.1 x
107 (-m)-1,
do the following:
(a) Calculate the resistance (in
) of a wire 2.6 mm in diameter and 6.7 m long.
(b) Calculate the current (in A) if the potential drop across
the ends of the wire is 0.060 V.
(c) Calculate the current density (in A/m^2).
(d) Compute the magnitude of the electric field (in V/m) across
the ends of the wire.
A copper wire has cross section area 0.002 m' and length of 400 m, what is the resistance of this copper wire? When a 200-V potential difference is applied over the wire, what is the current through the wire and what is the electric power? If the current is uniformly distributed, what is the current density? If the drift speed is 10 m/s, what is the number density of electrons in the wire? (Given copper's resistivity as 2x10 s2 m)....
A current of 2.31 A flows through a 1.11 mm diameter copper wire that is connected to a capacitor plate. The current is directed toward the plate. Find the charge transferred to the plate in 9.10 x 10-4 s.
The figure shows wire section 1 of diameter D,-5.50R and wire section 2 of diameter D2-3.00R, connected by a tapered section. The wire is copper and carries a current. Assume that the current is uniformly distributed across any cross-sectional area through the wire's width. The electric potential change Valong the length L-1.50 m shown in section 2 is 13.0 μν. The nurmber of charge carriers per unit volume is 820x 1028 m3. What is the drift speed of the conduction...
The maximum rated current for a copper wire of cross-sectional
area 2 mm^2 is 20A. (a) What is the corresponding current density
in A/m^2? (b) On the assumption that each copper atom contributes
one conduction electron, calculate the electronic drift velocity
corresponding to this current density. (Avogadro's number =
6.02E10^23 atoms per mole; atomic weight of copper = 63.5; density
of copper = 8.92 g/cm^3.) (c) Use the observed conductivity to
calculate the average collision time for an electron in...
Strands of copper wire from a manufacturer are analyzed for strength and conductivity. The results from 100 strands are as follows: High Strength Low Strength High conductivity 73 Low conductivity12 4 a) If a strand is randomly selected, what is the probability that its conductivity is high and its strength is high? Round your answer to two decimal places (e.g. 98.76) b) If a strand is randomly selected, what is the probability that its conductivity is low or the strength...
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