a) Using your knowledge the coil (armature). ( of how DC motors work, state the direction of rotation of () b) Explain why, for a DC motor, the current to the coil in the armature must be reversed twice during each rotation. dWhat device reverses the current in the coil of the armature?

a) Using your knowledge the coil (armature). ( of how DC motors work, state the direction of rotation of () b) Explain why, for a DC motor, the current to the coil in the armature must be reversed twice during each rotation. dWhat device reverses the current in the coil of the armature?

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

See similar textbooks

Related questions

Q: A 120.0-V motor draws a current of 6.54 A when running at normal speed. The resistance of the…

Q: energy of a magnetic dipole in an external magnetic field is l (the same energy is associated with…

Q: Using the right hand rule on question 30.5P "A conduction loop in the shape of a square...." chapter…

Q: (5.) Suppose you want to produce magnetic field that cancels the Earth's magnetic field of 3,5 x…

A: We are required to find out the number of turns per meter of wire must make in construction of a…

Q: A 1300-turn coil of wire 2.00 cm in diameter is in a magnetic field that increases from 0 T to 0.140…

Q: Make a prediction: Increasing the number of coil windings around the iron bar will make the strength…

A: If we wind a wire around a iron bar then this behaves as solenoid with a medium.

Q: A magnetic field exerts a maximum torque to on a flat, current-carrying rectangular coil of N loops.…

Q: 6) A rectangular loop of sides "a" and "b" carries current "T" as shown in the figure. There is a…

A: The torque acting on a coil with N number of turns carrying current I in an external magnetic field…

Q: The particle is deflected by a magnetic force. What is the rigl this affect the direction of the…

A: Answer No deflection

Q: A) Calculate the net force that the magnetic field exerts on the coil. B) Calculate the torque that…

A: Since we only answer up to 3 sub-parts, we’ll answer the first 3. Please resubmit the question and…

Q: How big is the pulling force? A7.00-cm-long wire is pulled along a U-shaped conducting rail in a…

A: Given Length l = 7.00 cm = 0.07 m Resistance R = 0.320 Ω Velocity v = 4.00 m/s Power…

Q: If you place a current loop in a uniform magnetic field with a current as shown in the diagram,…

Q: A loose spiral spring is hung from the ceiling and a large current is sent through it. Describe how…

A: It is given that a loose spring is hanging to a wall. When current is passes through it each coil of…

Q: 7) A current loop is placed between two bar magnets as shown. Does the loop move to the right, move…

A: The direction of motion or rotation of the loop will depend on the orientation of the magnets and…

Q: 6. Write Biot-Savart's Law formula for a coil, define each parameter in the formula and explain why…

Q: Predict: If a stronger magnet is used to create the change in magnetic field, the current produced…

A: Given : What happens to the current through the coil if a stronger magnet is bought near to it ?

Q: Q8. What if you were to start with the south pole of the bar magnet sitting in the front half of…

A: A magnetic field is created by an electric current flowing through a wire.

Q: A bar magnet with the magnetic poles as indicated is dropped into a current loop as shown in the…

A: Using Fleming's Left-hand rule, the Forefinger indicates the direction of the magnetic field, and…

Q: O Consider rotating the coil about the vertical diameter by pulling the left side toward the reader…

A: 1)if we pull the coil simultenausely then there is current in the left side a and when itis pull…

Q: Sketch the magnetic field lines (lines of flux) around the coil shown below Include direction on…

A: we have to draw the magnetic field lines for the given coil.

Q: An clectron enters a region of space containing a uniform 1.25 x 10-5 T magnetic ficld. Its speed is…

Q: What magnetic fields are created in an electric motor and how does current translate into force?…

Q: Which of the following factors affect the amount of voltage induced by a changing magnetic field in…

A: d) All of the above factors affect the amount of voltage induced by a changing magnetic field in a…

Q: 12. A segment of wire (which is part of a complete circuit) is on a spacecraft traveling to Jupiter.…

A: Recall magnetic force on conductor=dF→=idl→×B→ where dl is elementry length of conductor. B is…

Q: 10. Refer to the list of operations below. The statements that apply to the operation of a simple…

Q: 1. Recall the motor principle. In what three ways can the magnetic force be increased?

Q: A solenoid consisting of 100 turns, of radius 1 cm, is 10 cm long and carries a current of 5 A. Fill…

A: Turns (N) = 100 Radius (r) = 1 cm or r = 0.01 m Length (L) = 10 cm or L = 0.1 m Current (I) = 5 A

Q: One current loop is placed inside another current loop with twice the radius as showm in figure.…

A: Two current loops are placed . The direction of current is opposite in both the circles . To find =…

Q: An eight-turn coil encloses an elliptical area having a major axis of 40.0 cm and a minor axis of…

Q: The magnetic levitation is provided for a magneplane by the interaction force between the coil on…

Q: sics val ane Part A What is the magnitude of the magnetic flux through one turn of the coil before…

Q: A conducting slinky is placed in the uniform magnetic field as shown in the figure. W' of the…

Q: 5) An electron crosses a perpendicular magnetic field as shown below. use The direction of the…

A: In Que 6) Magnetic field, B = 3×10-5 Distance from wire, r= 3cm Find current

Q: S)A bar magnet is positioned near a coil of wire, as shown in the figure below. What is the…

A: Since the direction of the magnetic field is from north to south due to the bar magnet. When the bar…

Q: Question 5 Which of the following provides evidence that energy is stored in the magnetic field…

A: The formula for the energy stored in a magnetic field is E = (1/2) L I2. The energy stored in a…

Q: Magnetic Forces, Materials, and Inductance Q7) Calculate the magnetic flux inside a toroid with 8000…

A: The number of turns in the coil is given as, N=8000 turns. The radius of the magnetic circuit is…

Q: Imagine moving along the axis of the current-carrying loop in the figure below, starting at a point…

A: The magnetic field due to the current carrying loop is dependent on the current flowing through the…

Q: When you move the magnet towards the coil, describe what happen inside the coil. Explain your…

A: Whenever a magnet in the vicinity of a coil is brought near it or moved away from it, an…

Q: A square coil (not a solenoid or a circular loop!) has 8,451 turns, side 87.4 cm and carries current…

A: Biot-Savart's law deals with the magnetic field induction at a point due to a small current element…

Q: A square loop is placed in the uniform magnetic field as shown in the figure. The magnetic field…

A: As per Faraday 's law, in case of change in magnetic flux an end will be induced. This emf causes…

Q: . A student uses a coil of radius 14 cm with 90 windings. a) Calculate the expected slope for a plot…

A: 1. A student uses a coil of radius 14 cm with 90 windings.a) Calculate the expected slope for a plot…

Q: The two springs in the figure each have a spring constant of 11 N/m. They are stretched by 1.5 cm…

Q: A coil of wire is connected to a meter. When a bar magnet is moved in and out of the coil, the meter…

A: A meter is attached to a coil of wire. The meter registers a current when a bar magnet is inserted…

Q: Would someone be able to explain the answers to these questions? I am a bit confused on how the…

Q: A current loop is shown below. What is the direction of the magnetic field at the center of the…

A: We know for a straight wire, magnetic field curls around the current : And the direction of…

Q: A flux of 25 X10^5 Maxwell links with a 1500 turn coil when a current of 3 A passes through the…

A: Given,ϕ=25×105 WbN= 1500I= 3AA) Inductance, L=NϕlL= 1500×25×1053= 1250×106 HL= 1250×106H

Q: Problem-1: (Electric motors) Torque on current loops- You know that much of the world's work is done…

A: Refer to the image of DC electric motor below :

Q: Hi! My professor wrote this but I dont really understand why the angle was not really the 30…

A: We are given dimensions of the rectangular loop. We hence find the area of loop. We are also given…

Question

a) Using your knowledge
the coil (armature). (
of how DC motors work, state the direction of rotation of
()
b) Explain why, for a DC motor, the current to the coil in the armature must be
reversed twice during each rotation.
What device reverses the current in the coil of the armature?
d) Describe one (1) change to the DC motor to increase strength of the
electromagnet in the armature stronger.

A simple DC motor is shown below. In this motor, the armature (the part that spind
consists
of
a single loop (coil).
IC기

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: Part (a)

Step 2: Part (a)

Step 3: Part (a)

Step 4: Part (b)

Step 5: Part (b)

Step 6: Part (b)

Step 7: Part (b)

Solution

Step by step

Solved in 8 steps with 8 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

Having a hard time with this. I will give a thumbs up! Thanks!
works. Avelocity selector is a device that only lets charges with a particular velocity through. 1. The positive charge + enters from the left with a speed y. The magnetic field 8 and electric field & are directed as shown. Neglect gravity. B 16 d. In what direction will the charge be deflected if it is moving very slowly? [21 a. What is the direction of the magnetic force on the positive charge (in/out/left/right/top/bottom/zero)? b. What is the direction of the electric force on the positive charge (in/out/left/right/top/bottom/zero)? C. In what direction will the charge be deflected if it is moving very fast? Hint: only one of the forces depend on teh speed of the charge. Think about which force will dominate when the charge is moving very fast. e. There is only one speed where the charges will not be deflected. Find this speed in terms of E, 8 and/or q. Show work. Neglect gravity. f. Which answers (a thru e) changes if the charge was negative instead of positive. Which answers do…
Please help me answer the following question
A current-carrying wire moves toward a coil A long straight wire carrying current I is moving with speed v toward a small circular coil of radiusr containing N turns, which is attached to a voltmeter as shown. The long wire is in the plane of the coil. (Only a small portion of the wire is shown in the diagram.) Voltmeter ?? N turns radius r The radius of the coil is 0.02 m, and the coil has 11 turns. At a particular instant I = 5 amperes, v = 2.8 meters per second, and the distance from the wire to the center of the coil x = 0.17 m. (a) What is the magnitude of the rate of change of the magnetic field inside the coil? You will need to calculate this algebraically before you can get a number. Write an expression for the magnetic field due to the wire at the location of the coil. Use the approximate formula, since the wire is very long. Remember the chain rule, and remember that v = dx/dt. dB/dt = T/s (b) What is the magnitude of the voltmeter reading? Remember that this includes all 11…
PLEASE FAST
Please help me with this question. Thanks!
A long straight wire carries a current I, as shown below. There is initially no current in the loop. In which direction should the loop be moved in order to induce a counterclockwise current in it? Hig A I I I up 1 -----
Dřaw the magnetic field, using arrows to indicate the direction of the mågnetic field. maignetie trerd. 8. to Dual Loop 19 Solenoid 9. Using your knowledge of magnetism and the right hand rule, determine whether the solenoids (coils) will attract or repel each other. Be sure to draw in the field lines and label the North and South poles. Diagram 1 Diagram 2 2020-03-25 Page 3 of 16
2) A small current-carrying loop is placed in a uniform magnetic field as shown in the figure. Which of the statements below best describes the motion of the loop when it is released? A) The loop rotates Clockwise and moves downward B) The loop rotates Counter-Clockwise and moves downward C) The loop rotates Clockwise D) The loop rotates Counter-Clockwise 1011
Please solve and answer the questions correctly. Thanks you!!
Help
3. MY NOTES DETAILS SERCP11GE 20.P.009. ASK YOUR TEACHER A bar magnet is positioned near a coil of wire, as shown in the figure below. paccoc Lww R What is the direction of the current in the resistor when the magnet is moved to the left and to the right? (a) to the left O No current is induced. The current is right to left. O The current is left to right. (b) to the right O The current is right to left. No current is induced. The current is left to right. Show My Work (Optional)