Homework Answers
here,
Electrical resistivity (also known as resistivity) is a fundamental property that quantifies how strongly a given material opposes the flow of electric current.
so , it is a property of material
it does not depends on length and cross sectional area of wire
so, the correct option is C) Both wires have the same resistivity
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Problem 8 (5 pts): How Consider two silver wires, one wire has 3 times the length...
Problem 8 (5 pts): Consider two silver wires, one wire has 3 times the length and...
Problem 8 (5 pts): Consider two silver wires, one wire has 3 times the length and half the radius of the other. How do the resistivities of these two wires compare? A) The longer wire has 4/3 times the resistivity of the shorter wire. B) The longer wire has 3 times the resistivity of the shorter wire. C) Both wires have the same resistivity D) The longer wire has 3/4 times the resistivity of the shorter wire. Problem 9 (5...
Which of the following is the correct statement regarding resistance? a. the resistance of a wire...
Which of the following is the correct statement regarding resistance? a. the resistance of a wire is inversely proportional to the resistivity of the wire b. the resistance of a wire is directly proportional to the length of the wire c. the resistance of a wire is directly proportional to the area of the wire d. all of the above statements are correct e. none of the above statements are correct Consider two copper wires. One wire has twice the...
Now let's consider the resistance of speaker wire. Suppose you're hooking up a pair of stereo...
Now let's consider the resistance of speaker wire. Suppose you're hooking up a pair of stereo speakers, You happen to have on hand some 20-m-Jong pieces of 16 gauge copper wire (diameter 1.3 mm); you use them to connect the speakers to the amplifier. These wires are longer than needed, but you just coil up the excess length instead of cutting them. What is the resistance of one of these wires? To improve the performance of the system, you purchase...
5. Two wires, A and B, are made of the same metal and have equal length,...
5. Two wires, A and B, are made of the same metal and have equal length, but the resistance of wire A is 3 times the resistance of wire B. How do their diameters compare? (5pt)
please answer both parts of this question (a & b). will upvote as long as I...
please answer both parts of
this question (a & b). will upvote as long as I can read
through the assistance, thanks in advance
(a) Compute the voltage drop along a 20m length of copper wire that carries 12A current. The wire has diameter 1.628 mm. Resistivity of copper is p = 1.7 x 10-89m.s Hint: Use Ohm's law and the formula of resistance in terms of the resistivity. b) Two copper wires have the same resistance. If one has...
2) Two copper wires have the same voltage across them and the same length, but one...
2) Two copper wires have the same voltage across them and the same length, but one wire has twice the diameter as the other. How much power is dissipated in the wire with twice the diameter compared to the other wire?A) 1/4 as much B) 1/2 as much C) the same amount D) twice as much E) four times as much
(a) A 34.1-m length of copper wire at 20.0°C has a radius of 0.31 mm. If...
(a) A 34.1-m length of copper wire at 20.0°C has a radius of 0.31 mm. If a potential difference of 7.0 V is applied across the length of the wire, determine the current in the wire. (Use the values in the following table.) Resistivities and Temperature Coefficients of Resistivity for Various Materials (at 20°C) Material Resistivity (Ω · m) Temperature Coefficient of Resistivity [(°C)−1] Silver 1.59 ✕ 10−8 3.8 ✕ 10−3 Copper 1.7 ✕ 10−8 3.9 ✕ 10−3 Gold 2.44...
5) An infinite length wire is placed in between two other infinite length wires as shown...
5) An infinite length wire is placed in between two other infinite length wires as shown in the figure below. Find the resulting force per unit length on the middle wire. IL = 2 A IR = 4 A 2cm 4cm M 3 A
The figure shows a wire with a semicircle of radius 5 cm in between two wires...
The figure shows a wire with a semicircle of radius 5 cm in between two wires each of length 5 cm. A current of 5 A flows in the direction as shown. a. What is the magnitude and direction of the magnetic field at the center of the semicircle? b. Do the straight segments of the wire contribute to the magnetic field? Explain. c. If another segment of wire exactly the same as the wire in the first problem is...
MULTIPART-3 Two long parallel wires carry currents of 5 A and 7 A in the opposite...
MULTIPART-3 Two long parallel wires carry currents of 5 A and 7 A in the opposite direction. The wires are separated by 0.28 m. a) Find the magnetic force per unit length between the two wires. b) Find the magnetic field midway between the wires c) Find the magnetic force on each wire. The wires are then suspended horizontally one above the other with the currents flowing in same direction. d) If the upper wire is held securely without sagging,...
Problem 8 (5 pts): Consider two silver wires, one wire has 3 times the length and half the radius of the other. How do the resistivities of these two wires compare? A) The longer wire has 4/3 times the resistivity of the shorter wire. B) The longer wire has 3 times the resistivity of the shorter wire. C) Both wires have the same resistivity D) The longer wire has 3/4 times the resistivity of the shorter wire. Problem 9 (5...
Now let's consider the resistance of speaker wire. Suppose you're hooking up a pair of stereo speakers, You happen to have on hand some 20-m-Jong pieces of 16 gauge copper wire (diameter 1.3 mm); you use them to connect the speakers to the amplifier. These wires are longer than needed, but you just coil up the excess length instead of cutting them. What is the resistance of one of these wires? To improve the performance of the system, you purchase...
5. Two wires, A and B, are made of the same metal and have equal length, but the resistance of wire A is 3 times the resistance of wire B. How do their diameters compare? (5pt)
please answer both parts of
this question (a & b). will upvote as long as I can read
through the assistance, thanks in advance
(a) Compute the voltage drop along a 20m length of copper wire that carries 12A current. The wire has diameter 1.628 mm. Resistivity of copper is p = 1.7 x 10-89m.s Hint: Use Ohm's law and the formula of resistance in terms of the resistivity. b) Two copper wires have the same resistance. If one has...
2) Two copper wires have the same voltage across them and the same length, but one wire has twice the diameter as the other. How much power is dissipated in the wire with twice the diameter compared to the other wire?A) 1/4 as much B) 1/2 as much C) the same amount D) twice as much E) four times as much
5) An infinite length wire is placed in between two other infinite length wires as shown in the figure below. Find the resulting force per unit length on the middle wire. IL = 2 A IR = 4 A 2cm 4cm M 3 A
The figure shows a wire with a semicircle of radius 5 cm in between two wires each of length 5 cm. A current of 5 A flows in the direction as shown. a. What is the magnitude and direction of the magnetic field at the center of the semicircle? b. Do the straight segments of the wire contribute to the magnetic field? Explain. c. If another segment of wire exactly the same as the wire in the first problem is...
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