A copper wire of 10 Q and length L. At what point along its length must the wire be cut out so tha the resistance of one piece is 4 times the resistance of the other? O A. 4L/5 O B. 3L/5 O C. L/6 D. 2L/5 O E. L/5

A copper wire of 10 Q and length L. At what point along its length must the wire be cut out so tha the resistance of one piece is 4 times the resistance of the other? O A. 4L/5 O B. 3L/5 O C. L/6 D. 2L/5 O E. L/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: As shown, what is the current in the wire above the junction? Does charge flow toward or away from…

Q: What property of a material makes it a good electrical conductor (i.e. has low resistance). as…

A: In good conductor, there are free electrons present which are charge carriers and when conductor is…

Q: 2. In figure, the ideal batteries have emfs ɛ1 = 10.0 V and ɛ2 = 5.0 V, and the resistance are each…

Q: What is the equivalent resistance between points A and B in the figure when R = 16.1 Q? Normal…

Q: The voltage across an object is steadily increased, and the resulting current through the object is…

A: We know that slope of V-I graph gives the resistance of the object.

Q: R1 = 35 Ω, R2 = 20 Ω, and R3 = 15 Ω. The battery supplies an emf of ε = 220V. What is the equivalent…

A: R1= 35 Ω, R2= 20 Ω, and R3= 15 Ω Equivalent resistance, Rs = 35+20+15 = 70 Ω In series…

Q: The resistors given are all 1.0 Ω. What is the equivalent resistance between points a and b?

A: Given circuit contains resistor in parallel as well as in series. Formula for equivalent resistance…

Q: Consider the following figure. 7.00 2 4.00 Ω 9.00 Ω R (a) Find the equivalent resistance between…

A: Given R = 13.0 ohm V = 50.0 V

Q: %3D %3D Find the equivalent resistance between points a and b in the figure below. (Let R, = 2.70 N,…

A: Given data The resistance of the first resistor is R1=2.70 Ω The resistance of the second resistor…

Q: Three resistors R, = 89.2 N, R, = 23.0 N, R, = 70.0 N, and two batteries E, = 40.0 V, and E, = 366 V…

Q: Can you help me solve a simple circuit. I'm having trouble finding the current and voltage drop…

Q: 1. The current flowing through the 8.45-N resistor in FIGURE below is 1.52 A. (a) What is the…

Q: R, R2 100 Q 300 Ω. 50 2 9 V What is the total resistance in the circuit? What is the amount of…

Q: + %3D %3D %3D 6.38 In Figure P.6.9, R1 = 100.0 2, R2 = 30.0 N, R3 = 10.0 N, and VB = 20.0 %3B R, B.…

Q: A total resistance of 3.27 Q is to be produced by connecting an unknown resistance to a 12.06 a…

Q: 5. Find the total resistance of eight resistors below: R1 = 10 N, R2 = 2 N, R3 = 3 N, R4 = 17 N, Rs…

A: Given data- R1 = 10 Ω, R2 = 2 Ω, R3 = 3 Ω, R4 = 17 Ω, R5 = 20 Ω, R6 = 20 Ω,…

Q: A wire with resistance R is connected to the terminals of a 6.0 V battery. What is the potential…

Q: 2. If R, has a resistance twice that of Ry, determine the value of R; and Ry in the figure and the…

Q: Three resistors are connected as shown in the figure, where Ri-4,0 2, R-2.0& Rs-3.0 The potential…

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: Please help me with resistor problem. Ty! Please help me understand series and parallel rule for…

A: Write the given values of this problem. R=10 ohm

Q: MY NOTES ASK 1. DETAILS SERPSE10 27.A.P.033. 3.90 Ω.) Find the equivalent resistance between points…

A: From the give figure, R2 and 3.50 Ω are in series thus their equivalent resistance is given by…

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

A: Let the length of the shorter wire is L having diameter d. And length of the longer wire is 2L…

Q: Determine the value of resistance R if the equivalent resistance in Figure below is 100 Q and…

Q: For the following circuit in the figure below, find the power ( in units of Watt) delivered to the…

A: Given:- E = 17.5 V R = 3 ohm

Q: R R What is the equivalent resistance of the given system of resistors? All resistors have…

Q: 2. What is the resistance of a 5.4-m length of copper wire 1.5 mm in diameter? r = 1.68 x10-8 W×m

Q: High-voltage power lines are a familiar sight throughout the country. The aluminum wire used for…

A: resistivity of aluminum be= p =2.8×10-8 Ωm A=4.9×10-4m2 l= 10 km= 10000 m let resistance be R

Q: The wires shown all have the same resistance; the length and radius of each wire are noted. Rank in…

A: The resistivity of a wire of resistance R, length L' and radius r' is given as. ρ=R.AL'2=R.πr'2L'2

Q: Consider the following figure. 7.00 N 4.00 N 9.00 N R (a) Find the equivalent resistance between…

Q: A wire having an area of cross section = 10 m? and another wire having an area of cross section = 15…

Q: The lightbulb in the circut diagram above has a resitance of 1.0 ohm. Consideter the potetial…

A: (A) Write the Ohm’s law.

Q: Three resistors R, = 88.7 N, R2 = 21.2 N, R3 = 70.0 N, and two batteries &, = 40.0 V, and E, = 360 V…

Q: A metal wire of resistance R is cut into three equal pieces that are then placed together side to…

A: The initial resistance of the metal wire can be expressed as R=ρLA Here, L is the length, A 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: Find the current through and the potential difference across each resistor shown.

Q: In the figure below, the resistances are R, = 6 N, R2 = 5 0, R3 = 2 0, R4 = 4 N, R5 = 4 N, Rg = 6 N,…

Q: 2-Resistors R1 (12 kQ), R2 (6 kQ), and R3 (9 kQ) are connected in form as like in Figure. What is…

A: Given: The resistance R1 is 12 kΩ. The resistance R2 is 6 kΩ. The resistance R3 is 9 kΩ. The voltage…

Q: 11 - In the figure below let R1 =4 2, R2=4 2, R3=4 2, R4=40, and AV=40 V. Find the current I. R2 R1…

A: R1 = 4 Ω R2 = 4 Ω R3 = 4 Ω R4 = 4 Ω ∆V = 40 V

Q: Three resistors are connected as shown in the figure, where R-4.02, R:-20A& R3.0 S2 The potential…

A: Given R1= 4 ohm R2 = 2 ohm & R3 = 3 ohm Potential difference between point A & B is 26…

Q: You need a 45 Q resistor, but the stockroom has only 20 N and 50 Q resistors. How can the desired…

A: We have to connect two 50 ohms in parallel combination and then have to connect a 20ohm in series…

Q: 1- (a) What is the equivalent resistor in this combination? E = 60.0 V, r = 0 3.00 Ω 12.0 Ω 6.00 N…

A: Given resistances are, R1=3 ΩR2=6 ΩR3=12 ΩR4=4 Ω The emf of battery is ε=60 V.

Q: You need a 45 Q resistor, but the stockroom has only 20 Q and 50 Q resistors. How can the desired…

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

A: Given data: Resistance=R1=R2=R Length l1=2l2 The resistance of the wire is given by,…

Q: A conducting wire is stretched two times it's starting length. It has resistance (R). What the new…

A: Given: The resistance of the old wire is R. The new length of the wire doubled.

Question

A copper wire of 10 Q and length L. At what point along its length must the wire be cut out so tha
the resistance of one piece is 4 times the resistance of the other?
O A. 4L/5
O B. 3L/5
OC. L/6
O D. 2L/5
1O E. L/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 2 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

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?
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 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
A nichrome rod that is 3.00 mm long with a cross sectional area of 1.00 mm2 is used for a digital thermometer, (a)What is the resistance at room temperature? (b)What is the resistance at body temperature?
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?
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?
For the network in Figure P18.60, show that the resistance between points a and b is Rab=2717. (Hint: Connect a battery with emf across points a and b and determine /I, where I is the current in the battery.) Figure P18.60
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) 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 = .)
A car battery with a 12-V emf and an internal resistance of 0.050 is being charged with a current of 60 A. Note that in this process the battery is being charged. (a) What is the potential difference across its terminals? (b) At what rate is thermal energy being dissipated in the battery? (c) At what rate is electric energy being converted to chemical energy? (d) What are the answers to (a) and (b) when the battery is used to supply 60 A to the starter motor?
A student uses a 100.00-W, 115.00-V radiant heater to heat the student’s dorm room, dining the hours between sunset and sunrise, 6:00 p.m. to 7:00 a m. (a) What current does the heater operate at? (b) How many electrons move through the heater? (c) What is the resistance of the heater? (d) How much heat was added to the dorm room?
A 12.0-V emf automobile battery has a terminal voltage of 16.0 V when being charged by a current of 10.0 A. (a) What is the battery’s internal resistance? (b) What power is dissipated inside the battery? (c) At what rate (in °C/min ) will its temperature increase if its mass is 20.0 kg and it has a specific heat of 0.300 kcal/kg • °C, assuming no heat escapes?