A copper wire of 10 Q and length L. At what point along its length must the wire be cut out so that the resistance of one piece is 4 times the resistance of the other? O A. 4L/5 О В. 2L/5 О С. L5 O D. 3L/5

A copper wire of 10 Q and length L. At what point along its length must the wire be cut out so that the resistance of one piece is 4 times the resistance of the other? O A. 4L/5 О В. 2L/5 О С. L5 O D. 3L/5

University Physics Volume 2

18th Edition

ISBN:9781938168161

Author:OpenStax

Publisher:OpenStax

Chapter9: Current And Resistance

Section: Chapter Questions

Problem 71AP: A nichrome rod that is 3.00 mm long with a cross sectional area of 1.00 mm2 is used for a digital...

See similar textbooks

Related questions

Q: A length of wire is cut into five equal pieces. If the five pieces are then connected in parallel,…

A: Given: The resulting resistance of the wire is 2.00 Ω. Introduction: The resistance made up of the…

Q: Three resistors connected in parallel have individual values of 4.0 2, 6.0 2, and 10.0 Q, as shown…

A: Dear student The net current across any resister is given by: I = V/R Here V = potential difference…

Q: In the figure the current in resistance 6 is ig = 1.30 A and the resistances are R1 = R2 = R3 = 1.60…

Q: Using Kirchhoff’s rules, (a) find the current in each resistor shown in the figure and (b) find the…

Q: In the figure R = 1500, R2 = R3 = 49.00, R4 = 89.5 0, and the ideal battery has emf s = 6.00 V. (a)…

A: Solution:-

Q: FV = 40 V and the battery is ideal, what is the current through R3 in the figure? Provide the…

A: According to Kirchhoff's second law Sum of voltage in close loop is always zero.

Q: In the figure below, the current in resistance 6 is i6 = 1.20 A and the resistances are R1 = R2 = R3…

Q: The current in a resistor decreases by 8 A when the voltage applied across the resistor decreases…

Q: A wire of length L and cross-sectional area A has a resistivity p. Which of the following formulas…

A: Given : Length of a wire = L Cross-sectional area = A Resistivity = ρ

Q: At the left end. the resistivity is 2.25*10-8 Ω.m and the right side is 4.50*10-8m. (a) What is the…

Q: Using Kirchhoff's rules (and given E, = 70.4 V, E, = 61.4 V, E = 79.7 V) calculate the following.…

Q: A wire of length L and cross-sectional area A has a resistivity p. Which of the following formulas…

A: Given length of the wire 'L' Cross sectional area is given by'A' Resistivity is given by 'p' Let the…

Q: In the figure R, = 130 0, R2 = R3 = 39.0 Q, R4 = 71.10, and the ideal battery has emf ɛ = 6.00 V.…

Q: A 120 V potential difference is applied to a space heater whose resistance is 19Q when hot. (a) At…

Q: In the figure the current in resistance 6 is i6 = 1.41 A and the resistances are R₁ = R₂ = R3 =…

Q: Given is a current-versus-potential-difference graph for a cylinder. What is the cylinder’s…

Q: ne figure the current in resistance 6 is ig = 1.37 A and the resistances are R1 = R2 = R3 = 2.21 0,…

A: The current in resistor is 1.37 A and the resistance are R1 , R2 and R3

Q: A 120 V potential difference is applied to a space heater whose resistance is 17 Q when hot. (a) At…

Q: A 120 V potential difference is applied to a space heater whose resistance is 15 Q when hot. (a) At…

A: Given Voltage V=120V Resistance R=15Ω

Q: In the circuit shown below E = 75.0 V, R5 = 4.0o n, R3 = 2.00 n, R2 = 2.20 n, Iş = 8.40 A, I4 = 5.50…

A: Give E=75V R5 =4ohm R3 =2ohm R2 =2.2ohm I5=8.4A I4 =5.5A I1=11A We have to find the values of I3 I2…

Q: Material with uniform resistivity ρ is formed into a wedge as shown in Figure P26.50. Show that the…

Q: Q5. A number of resistors are connected across points A and B as shown in the figure. What is the…

A: It must be remembered that the resistors connected in series are simply algebraically added to find…

Q: In the figure the current in resistance 6 is ig = 1.39 A and the resistances are R, = R2 = R3 = 2.40…

Q: Three resistors R1 = 82.1 A, Rz = 20.6 0, R3 = 70.0 0, and two batteries E1 = 40.0 V, and Ez = 366 V…

Q: The graph below represents the relationship between the resistance and the length of a wire of a…

Q: A wire of length L and cross-sectional area A has a resistivity p. Which of the following formulas…

Q: A 120 V potential difference is applied to a space heater whose resistance is 13Q when hot. (a) At…

Q: Currents up to 30 A can be carried by 10 gauge copper wire. (a) What is the resistance of 80 m of 10…

Q: 12.0 N 4.00 N 5.00 2 6.00 N 8.00 N ) What is the equivalent resistance (in 0) of the entire…

A: Consider a circuit having equivalent resistance between points a & b as (Req) in ohm…

Q: A1. A hair blower contains a heating element which has a resistance of 57 Ω. This heating element is…

A: Resistance, R = 57 Ω Potential difference, V = 220 V

Q: 4 (a) What is the equivalent resistance between points A and B? (b) A 276 V emf is connected to the…

Q: An aluminum rod with a square cross-section is 2.6 m long and 5.3 mm on edge. (a) What is the…

A: Given data: Length of aluminum rod is, La=2.6 m. Edge length of aluminum rod is, a=5.3 mm=5.3×10-3…

Q: Material with uniform resistivity p is formed into a wedge as shown in Figure P26.50. Show that the…

Q: In the figure the current in resistance 6 is i6 = 1.48 A and the resistances are R1 = R2 = R3 = 2.23…

A: Given information: The current in the resistance 6 (i6) = 1.48 The resistances: R1=R2=R3=2.23…

Q: A wire carries a steady current of 0.1 A over a period of 20 s. What total charge passes through the…

A: Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: In the figure R₁ = 6.44 Q, R₂ = 19.30, and the ideal battery has emf ε = 11.3 V. (a) What is the…

Q: 2. A cylindrical metal rod is 1.90 m long and 5.50 mm in diameter. The resistance between its two…

Q: 60.0 V, r= 0 The circuit in the figure on the right shows a network of resistors connected in series…

A: (a) ε=EMF=60 V Equivalent resistance of the circuit is Re=113+16+1112+14=2+3=5 Ω The total…

Q: Using Kirchhoff's rules, find the following. (E, = 71.0 V, E, = 61.8 V, and Ez = 79.8 V.) 4.00 kN d…

Q: E = 60.0 V, r= 0 2. The circuit in the figure on the right shows a network of resistors connected in…

Q: In the figure an ideal battery of emf = 12.7 V is connected to a network of resistances R1 = 4.11 Q,…

A: As per bartelby guidelines I have solved first question out of multiple questions and If you want…

Q: d+y 8. A wire of 2 mm² cross-sectional area and 1.3 cm long contains 2 x100 electrons. It has a 102…

Q: Using Kirchhoff's rules (and given E = 70.1 V, E2 = 61.7 V, E3 = 79.6 V) calculate the following.…

Q: In the figure the current in resistance 6 is i, = 1.46 A and the resistances are R = R2 = R3 = 1.77…

Q: 1. Find the equivalent resistance between points a and b in Figure P18.45. 2.4 N 5.1 0 1.8 02 3.5 N…

A: As the resistors 3.5 Ω and 5.1 Ω are connected in series, then the equivalent resistance is given…

Q: 4. A 12.0 V battery is connected to the resistor combination shown below. (a) How much current…

Q: Two aluminum wires have the same resistance. If one has twice the length of the other. What is the…

A: Length of wire 1, Length of wire 2, Resistivity of the wire

Q: An aluminum rod with a square cross section is 1.8 m long and 6.2 mm on edge. (a) What is the…

Q: Using Kirchhoff’s rules, (a) find the current in each resistorshown in Figure P18.25 and (b) find…

A: On applying Kirchhoff’s voltage law In loop abcf

Question

100%

A copper wire of 10 Q and length L. At what
point along its length must the wire be cut
out so that the resistance of one piece is 4
times the resistance of the other?
O A. 4L/5
O B. 2L/5
C. L/5
O D. 3L/5

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

SEE SOLUTION Check out a sample Q&A here

Step 1

VIEW

Step 2

VIEW

Step by step

Solved in 2 steps with 1 images

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, physics and related others by exploring similar questions and additional content below.

Similar questions

Unreasonable Results (a) To what temperature must you raise a resistor made of constantan to double its resistance, assuming a constant temperature coefficient of resistivity? (b) To cut it in half? (c) What is unreasonable about these results? (d) Which assumptions are unreasonable, or which premises are inconsistent?
(a) Kind the equivalent resistance between points a and b in Figure P28.13. (b) Calculate the current in each resistor if a potential difference of 34.0 V is applied between points a and b.
A metal wire of resistance R is cut into three equal pieces that are then placed together side by side to form a new cable with a length equal to one-third the original length. What is the resistance of this new cable? (a) 19R (b) 13R (c) R (d) 3R (e) 9R
If electrical energy costs 0.12 per kilowatt-hour, how much does it cost to (a) burn a 100-W lightbulb for 24 h? (b) Operate an electric oven for 5.0 h if it carries a current of 20.0 A at 220 V?
A regular tetrahedron is a pyramid with a triangular base and triangular sides as shown in Figure P28.73. Imagine the six straight lines in Figure P28.73 are each 10.0- resistors, with junctions at the four vertices. A 12.0-V battery is connected to any two of the vertices. Find (a) the equivalent resistance of the tetrahedron between these vertices and (b) the current in the batten.
If electrical energy costs 0.12 per kilowatt-hour, how much does it cost to (a) burn a 100-W lightbulb for 24 h? (b) Operate an electric oven for 5.0 h if it carries a current of 20.0 A at 220 V?
Wire B has twice the length and twice the radius of wire A. Both wires are made from the same material. If wire A has a resistance R, what is the resistance of wire B? (a) 4R (b) 2R (c) R (d) 12R (e) 14R
(a) Can the circuit shown in Figure P27.21 be reduced to a single resistor connected to a battery? Explain. Calculate the currents (b) I1, (c) I2, and (d) I3. Figure P27.21
(a) Can the circuit shown in Figure P18.27 be reduced to a single resistor connected to the batteries? Explain. (b) Calculate each of the unknown currents I1, I2, and I3 for the circuit. Figure P18.27
A 20.00-V battery is used to supply current to a 10-k resistor. Assume the voltage drop across any wires used for connections is negligible, (a) What is the current through the resistor? (b) What is the power dissipated by the resistor? (c) What is the power input from the battery; assuming all the electrical power is dissipated by the resistor? (d) What happens to the energy dissipated by the resistor?
Unreasonable Results (a) What current is needed to transmit 1.00 102 MW of power at 10.0kV? (b) Find the resistance of 1.00 km of wire that would cause a 0.0100% power loss. (c) What is the diameter of a 1.00-km-long copper wire having this resistance? (d) What is unreasonable about these results? (e) Which assumptions are unreasonable, or which premises are inconsistent?
(a) A defibrillator sends a 6.00-A current through the chest of a patient by applying a 10,000-V potential as in the figure below. What is the resistance of the path? (b) The defibrillator paddles make contact with the patient through a conducting gel that greatly reduces the path resistance. Discuss the difficulties that would ensue if a larger voltage were used to produce the same current through the patient, but with the path having perhaps 50 times the resistance. (Hint: The current must be about the same, so a higher voltage would imply greater power. Use this equation for power: P=I2 RP = .)