A wire of length L and resistance R is cut into 4 equal pieces. If the 4 pieces are now twisted together to make a wire of length L/4, what is the new resistance of the shorter wire combination? OR OR/16 4R 16R OR/4

A wire of length L and resistance R is cut into 4 equal pieces. If the 4 pieces are now twisted together to make a wire of length L/4, what is the new resistance of the shorter wire combination? OR OR/16 4R 16R OR/4

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter17: Current And Resistance

Section: Chapter Questions

Problem 10CQ: Power P0 = I0 V0 is delivered to a resistor of resistance R0. If the resistance is doubled (Rnew =...

See similar textbooks

Related questions

Q: We intend to observe two distant equal-brightness stars whose angular separation is 50.0 * 10-7rad.…

A: Wavelength of light is Angular separation is Note:Find:The smallest diameter of objective lens.

Q: In front of a spherical concave mirror of radius 48.4 cm, you position an object of height 4.37 cm…

Q: A body at a temperature of 200°F is placed in room at a constant temperature of 10°F. If after 20…

Q: In a church choir loft, two parallel walls are 5.30 m apart. The singers stand against the north…

Q: A rotating door is made from four rectangular glass panes, as shown in the figure. The mass of each…

Q: A person wants to make a metronome for music practice. He uses a 32 gram object attached to a spring…

A: The objective of this question is to find the spring constant for a spring attached to a 32 gram…

Q: D ▷ D ********** A fluid with specific weight 321b/ft³ flows through the pipe below as it narrows…

A: The objective of this question is to find the difference in heights in the barometer attached to the…

Q: water has a bulk modulus of 2.2 x 109 n/m2. Suppose water at an atmospheric pressure has a density…

A: The bulk modulus of water is The density of the water at atmospheric pressure is The depth of the…

Q: 2. A 1.2 kg cart moving at 6.0 m/s [E] collides with a stationary 1.8 kg cart. The head-on collision…

A: Mass of object 1 is Initial velocity of object 1 is towards East direction.Mass of object 2 is…

Q: part d What is the non-relativistic momentum of an electron moving at this speed (81 % of the speed…

Q: A coil with 209 turns has a magnetic flux of 45.1 nT-m² through each turn when the current is 2.44…

Q: Suppose that the radiation emitted by an object at the peak of its energy density per unit…

A: Ionization energy for a hydrogen atom is To find: the lowest temperature of the object when…

Q: A golf ball weighting 0.05 kg is hit at 1000m / s * 2 at an angle of 45 degrees What is the force in…

A: Mass of object is Acceleration is Angle is Note:Find:Horizontal and vertical component of force.

Q: A bowling ball encounters a 0.760-m vertical rise on the way back to the ball rack, as the drawing…

Q: How does a coffee thermos control convection so as to keep coffee hotter longer? A Conduction is…

A: How does a coffee thermos control conduction so as to keep coffee hotter longer? (A) Conduction is…

Q: In a process of an ideal gas, the pressure is halved while the volume is kept constant. During this…

A: An ideal gas Pressure is halved, Volume is kept constant, Heat flow,

Q: (I) A point charge Q₁ is at (-a, 0) and charge Q₂ is at (a,0). Sketch qualitatively the variation of…

Q: The number density in a container of neon gas is 5.40 × 1025 m -3 The atoms are moving with an rms…

A: Given Data:The number density in a container of neon gas is The rms speed of the atom is The…

Q: A round speaker emits sound waves uniformly in all direction. At a distance of 40.0m from the…

Q: 37. An object of height 8.00 cm is placed 25.0 cm to the left of a converging lens with a focal…

A: The objective of the question is to determine the image location, magnification, and image height…

Q: 31. A converging lens has a focal length of 10.0 cm. Locate the images for object distances of (a)…

Q: 1.28 kg sample of water at 10.0◦ C is in a calorimeter. You drop a piece of steel with a mass of…

A: From the principle of calorimetry, the heat energy gained by water will be equal to the heat energy…

Q: || Astronauts visiting a new planet find a lake filled with an unknown liquid. They have with them a…

Q: An electron jumps from the n = 4 to the n = 1 level in the hydrogen atom. In a second atom and…

Q: A cylindrical bar magnet of radius 1.00 cm and length 10.0 cm has a magnetic dipole moment of…

A: The magnetic dipole moment of the bar magnet is given by

Q: Measure the current and potential difference (voltage) for each resistors. Solve using Kirchhoff's…

Q: Sofia applies a force of 197 N to pull a pair of identical resistance bands and extend these by 2.5…

A: Force is Displacement is Find:The value of spring constant.

Q: On one side of a converging lens of focal length 27.6 cm, you position an object of height 3.09 cm…

A: Focal length of converging lens is Height of object is Height of image is Find:Object distance.

Q: Three charges of +1.0 x 10-C form an equilateral triangle with side length 40 cm. What is the…

A: Charges are Charges are placed at the corners of an equilateral triangle.The distance between…

Q: a negatively charged particle moves to the right when it enters a magnetic field in the plane of the…

A: The Right hand rule is used to determine the direction of the magnetic field- Thumb: Velocity of…

Q: In the figure, an ac generator with emf E = Em sin wat, where Em = 24.3 V and wd = 385 rad/s, is…

Q: Please refer to part (b). Here, theta (the angle the incident ray makes with respect to the…

Q: An inductor with inductance L is connected to an AC source. If the AC source provides a voltage…

A: Voltage across inductor

Q: A 1.2 kg cart moving at 6.0 m/s [E] collides with a stationary 1.8 kg cart. The head-on collision is…

A: Since the student has requested for part B only, hence its solution is as follows :

Q: In the figure, an ac generator with emf E = Em sin wat, where Em = 26.0V and wd = 383 rad/s, is…

A: Emf of AC generator, The inductance of inductor,

Q: 5. Evaluate the integral by making the given substitution. (Use C for the constant of integration)…

Q: Part of riding a bicycle involves leaning at the correct angle when making a turn, as seen in Figure…

Q: kg The tank below is filled with a fluid with density 857 If the outlet at the bottom of the tank…

A: The objective of the question is to determine the rate at which fluid is leaving the tank through…

Q: At 100°C the rms speed of nitrogen molecules is 576 m/s. Nitrogen at 100° C and a pressure of 2.5…

Q: A copper bar of thermal conductivity 401 W/(m·K) has one end at 114°C and the other end at 24.0°C.…

Q: This time, the incident ray is coming in from water (n=1.33) rather than air. And this time, theta =…

A: Given,n = 1.33θ = 42.5oy = 28.6 cmh = 1.07 cm

Q: A 1.2 kg block sliding at 5.4 m/s on a frictionless surface runs into and sticks to a spring. The…

A: The objective of the question is to determine the amplitude of the vibrations that start after the…

Q: Should focal length be converted to meters from centimeters? If not, please tell me why not?

Q: Consider dropping a baseball from rest at an altitude of 300 m. Assume that the baseball has a drag…

Q: Complete the following nuclear fission reaction of thorium-232. 232Th + n → 99Kr + 124Xe + ?…

Q: The axle of a flywheel has a radius of 0.06 m. A force of 50 newton is applied tangentially to the…

A: The relationship between torque and angular acceleration is described by Newton's second law for…

Q: A 200 g mass attached to a horizontal spring oscillates at a frequency of 2.0 Hz. At one instant,…

A: Since you have posted a question with multiple sub-parts, we will solve first three sub-partsfor…

Q: (3) A bullet with mass 4.0 g and speed 650 m/s is fired at a block of wood with mass 0.095 kg. The…

Q: One of your summer lunar space camp activities is to launch a 1130 kg rocket from the surface of the…

A: Mass of object is The altitude is Mass of moon is Radius of moon is Note:Universal gravitational…

Q: Find the force law of a particle in the central force field that allows the particle to move in an…

Concept explainers

Resistivity

Resistivity is a characteristic property of the conductor’s material that measures the extent to which the material opposes the flow of current. It is denoted by the Greek letter “rho”. Electrical resistivity, also known as specific resistance, depends on the nature of the material of the conductor and is unaffected by its dimensions.

Question

A wire of length L and resistance R is cut into 4 equal pieces. If the 4 pieces are now twisted together to make a wire of length L/4, what is
the new resistance of the shorter wire combination?
OR
OR/16
O 4R
O 16R
O R/4

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: Writing information given in the question

VIEW

Step 2: Solving for resistance

VIEW

Solution

VIEW

Step by step

Solved in 3 steps

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

When does an incandescent lightbulb carry more current? (a) immediately after it is turned on and the glow of the metal filament is increasing or (b) after it has been on for a few milliseconds and the glow is steady?
(a) Find the current in each resistor of Figure P18.18 by using the rules for resistors in series and parallel. (b) Write three independent equations for the three currents using Kirchhoffs laws: one with the node rule; a second using the loop rule through the battery, the 6.0- resistor, and the 24.0- resistor; and the third using the loop rule through the 12.0- and 24.0- resistors. Solve to check the answers found in part (a). Figure Pl8.18
(a) Find the current in each resistor of Figure P18.18 by using the rules for resistors in series and parallel. (b) Write three independent equations for the three currents using Kirchhoffs laws: one with the node rule; a second using the loop rule through the battery, the 6.0- resistor, and the 24.0- resistor; and the third using the loop rule through the 12.0- and 24.0- resistors. Solve to check the answers found in part (a). Figure Pl8.18
In the circuit of Figure P18.22, the current I1 is 3.0 A and the values of and R are unknown. What are the currents I2 and I3? Figure P18.22
Explain why R=R0(1 + a?T) for the temperature variation of the resistance R of an object is not as accurate as P=P0(1 + a?T) which gives the temperature variation of resistivity P.
When the switch is open in Figure 18.8, power Po is delivered to the resistor R1. When the switch is closed, which of the following is true about the power Pc delivered to R1? (Neglect the internal resistance of the battery.) (a) Pc Po (b) Pc = Po (c) Pc Po Figure 18.8 (Quick Quizzes 18.5 and 18.6)
A cylindrical copper rod has resistance R. It is reformed to twice its original length with no change of volume. Its new resistance is: 4R 2R R/2 8R R
A cylindrical copper rod of length L and cross-sectional area A is reformed to three times its original length with no change in volume. If the resistance between its ends was R before the change, then its resistance after the change is: a) 9R b) 3R c) 25R d) 5R e) 4R f) R a b e f
A copper wire of radius r and length lhas a resistance of R. A second copper wire with radius 2r and length lis taken and the two wires are joined in a parallel combination. The resultant resistance of the parallel combination of the two wires will be: A) 5 R B) 5 R/4 C) 4 R/5 D) R/5
A circuit made up of 6 resistors is shown in the figure, with resistances R1 = 11 N, R2 = 65 Q, R3 = 38 Q, R4 = 69 N, R5 = 85 Q, and R6= 45 Q. The total current going through the circuit is I= 18 A. R, R4 a R3 R R, Re |Calculate the value of AV, in volts.
A cylindrical copper rod of length L and cross-sectional area A is reformed to three times its original length with no change in volume. If the resistance between its ends was R before the change, then its resistance after the change is: a) 9R b) 3R c) 25R d) SR e) 4R a C d e O f
ire of length 100 cm and resistance 1n/cm is cut into two parts and these are coected in parallel. The effective resistance is 210. The resistance of the two parts are 60Ω,40Ω 30Ω,70Ω 200,80N None of these 50Ω,50Ω