Notebook FV2 - Forces and vectors

°8. A circular loop is conducting current in a counter-clockwise direction as shown. wire carn A number of changes to this initial situation are described in 1-6 below. Select from choices a-e how each change will affect the magnetic field at the center of the loop.

3. Two straight wires are fixed in place near one another, and carry equal currents io in opposite directions. a) Sketch the two contributions to the net magnetic field at point P. 2d ig out of 2d page into page b) Add these vectors graphically to obtain a sketch of the net magnetic field vector at P. c) Calculate the magnitude and direction of the magnetic field at P. * end view

From the experiment on tracing the magnetic field lines of the bar magnet, we understand the following: 1. The magnetic field lines of the earth is directed from to which was shown by the compass at the start of the experiment. 2. The field lines of the bar magnet was traced using following the north + of the compass needle. 3. The magnetic field of the bar magnet (outside) starts at + land ends at but we know that by nature the magnetic field lines are 4. are points where the field lines of the bar magnetic and earth's field are equal and opposite.

Assume that I = 4.0 A andd = 2.5 cm Part A What is the strength of the magnetic field at the center of the loop in the figure? (Figure 1) Express your answer to two significant figures and include the appropriate units. ? B = 0.000064 You have already submitted this answer. Enter a new answer. No credit lost Try again. Submit Previous Answers Request Answer Part B What is the direction of the magnetic field at the center of the loop? Figure out of the screen 1 of 1 into the screen Previous Answers V Correct Provide Feedback d

The figure at right shows two current carrying wires, which are oriented perpendicular to the page. The currents are the same magnitudes but • A opposite directions as indicated by the usual convention. wire 1 wire 2 What is the direction of the the net magnetic field vector at point A. A. С. D. E. F. into the out of the page page B.

The following figure represents a circular current carrying wire that is free to rotate in a uniform magnetic field. The side view is just to give perspective. We will only focus on the top down view. The magnetic field is in the -x direction and the current direction on the top portion of the wire is shown in the figure. axis of rotation axis of rotation Side View Top View a) Indicate the direction of the current at points A and B. b) Label the direction of the force from the magnetic field at points A and B. c) If the wire is released, will it rotate clockwise, counterclockwise, or neither?

The right half of the square loop of wire shown in (Figure 1) is in a 0.85 T magnetic field directed into the page. The current in the loop is 1.1 A in a clockwise direction. 1. What is the magnitude of the force on the loop?  Express your answer with the appropriate units. 2. In which direction does this force act? A. to the left B. upward C. downward D. to the right

The right half of the square loop of wire shown in (Figure 1) is in a 0.45 T magnetic field directed into the page. The current in the loop is 1.5 A in a clockwise direction Part A What is the magnitude of the force on the loop? Express your answer with the appropriate units. µA ? F = Value Units Submit Request Answer Part B In which direction does this force act? O to the left O to the right upward downward Figure < 1 of 1 Submit Request Answer Provide Feedback 5.0 cm X X X

Figure 1 shows a particle with a positive charge q and mass m moves through a velocity selector consisting of a magnetic field and an electric 2. field. The electric field points downward, as shown in Figure 1. E +q Figure 1 a) In which direction must point for the magnetic force to oppose the electric force? b) Suppose the electric field is turned off. Now, affected only by the magnetic field, the particle moves in a circular orbit. Beginning with official starting equations, find an expression for the radius of the particle's orbit.

2. A hypothetical charge q with a mass m moves in a circular path perpendicular to a uniform magnetic field with a magnitude of B and is direct into the page. If the speed of the hypothetical charge is v: A. Determine the radius of the circular path. B. Determine the time interval required to complete one revolution. Pointing System for Number 2: • What are the given in the problem? • What are the unknown variables? • What are the equations that you are going to use? • Solution and answer for Part A. • Solution and answer for Part B.

The direction of current in a conducting wire is shown in the figure below. What is the direction of the magnetic field that produces the magnetic force as shown? Fin I out of the page a. b. to the left c. to the right d. upward

1. Figure 1 below shows an electron moving in +x direction enter uniform magnetic field directed into the plane. Draw the path taken by the electron as they pass through the magnetic field region and leave from side QR. If another electron enters the same region with higher velocity, what happen to the path travel by the electron? Sketch the electron motion on the same diagram and explain your answer. electron Figure 1

A 1.85 m long metal bar having a weight of 3.50 N and a resistance of 10.0 S2, rests horizontally on conducting wires connecting it to the circuit shown in (Figure 1). The bar is in a uniform, horizontal, 1.65 T magnetic field and is not attached to the wires in the circuit. Figure a = Submit Request Answer Part B What is the magnitude of the acceleration of the bar just after the switch is closed? Express your answer in meters per second squared to three significant figures. 15. ΑΣΦ to the left to the right 120.0 V downward upward Submit T 25.0 Ω www Request Answer 10.0 Ω What is the direction of the acceleration of the bar just after the switch is closed? S ? 1 of 1 m/s²

​Then the ions enter to velocity selector region. In this region both electric and magnetic fields are applied. Next theyenter into the mass spectrometer region. In this region there is magnetic field different than the previous region. Depending of the charge of the ions, they travel in a circular path with a well-defined radius either to the left or to the right. 1.The mass difference between two isotopes is sometimes just a neutron mass. The spectrometer should separate them very well. For such an isotope combination, the difference in radius should be around 1 cm. That is . In order to achieve this, choose a magnetic field with a magnitude in Tesla (maximum magnetic field you can obtain from a conventional magnet is around 2.5 T so be far away from this value) and choose the direction also. Then determine the velocity of isotope you need. Last calculate radius r of a smallest isotope. 2.In order to produce this magnetic field, determine the current and number of turns, radius and…

NEED HELP PLEASE SUBJECT: GENERAL PHYSICS 2 TOPIC: MAGNETIC FORCE AND MAGNETIC FIELD 1. A straight wire with length L carries a current I which is directed to the right and is perpendicular to an unknown uniform magnetic field B. A magnetic force Facts on a conductor which is directed downwards. A. Determine the magnitude and the direction of the magnetic field in the region through which the current passes. B. If the angle between the current and the magnetic field is O this time, what would be the new value of the magnitude of the new magnetic force? Pointing System for No. 1: • What are the given in the problem? • What are the unknown variables? • What are the equations that you are going to use? • Solution and answer for Part A. • Solution and answer for Part B.

a) What would happen to the magnetic field and the current if the direction of motion of the magnet is reversed? b) What would happen to the magnetic field and the current if the magnet is moved more quickly in the same direction? c) What would happen to the magnetic field and the current if the magnet is moved rapidly back and forth? My Answer: I attached my answer below as well as the drawing of the coil and magnet. I am just unsure as to whether my first to answers (a and b) are correct and then for c), what the affect on the magnetic field is.  a) Current: If the direction of motion of the magnet was reversed then the direction of the current would also be reversed.  Magnetic Field: Since the magnetic field in the coil wants to oppose the moving magnetic field, an induced magnetic field will be created that will attract the magnet and prevent it from moving away from the coil.    b) Magnetic Field and Current: If the magnet moved more quickly in the same direction, then the…

a) The ring below represents a circular ring of wire with current going to the right in the front and then going back into the page (ask me if you're not sure you understand what the picture is). On one or both of the views, sketch the magnetic field lines that this object with current creates. Front View Overhead View current current b) Considering the field lines you drew above, explain why this object (a loop of wire) is often called a magnetic "dipole"

A long straight wire and a current loop with diameter of 20 cm are placed side by side as shown in Figure 3. Figure 3 If both carrying equal current I =5.0 A, determine a. direction and magnitude magnetic field produced by current loop at its centre C b. direction and magnitude magnetic field produced by straight wire at C c. direction and magnitude net magnetic field at C by both straight wire and loop. please show how to determine the direction.

In the figure below we have a wire loop with resistance R. in the gray area, magnetic field is constant and equal to B Figure1 We assumed that wire loop in the figure below has a resistance R so the current generated is : I=vBh/R But what if R=0 (perfectly conductive material) What happens when we move the loop with speed v?

Q2: Answer each item 1. How are magnetic materials classified based on magnetic moments Compare their properties. Give also their characteristics and examples . 2. What is magnetic dipole ?

Figure 3 shows a straight wire carrying a current in upwarddirection. The wire is placed near a wire loop. For each case described below, answer the following questions:a. What is the direction of the magnetic flux through theloop?b. Is the magnitude of the flux through the loop increasing ordecreasing with time?c. What is the direction of the magnetic field produced by theinduced current in the loop?d. What is the direction of the current induced in the loop?1. Case 1: The current is increasing.2. Case 2: The current is decreasing.3. Case 3: The current is constant but the loop is being pulledaway from the straight wire.

Hi can you explain and show how to get the direction of the magnetic field, and why it is realistic? Show all work thank you

In the figure below, a coil of wire is wound around a segment with magnetic flux directed as shown. The coil of wire is connected to a resistive load (not shown in the figure). If the magnetic flux is constant, what will be the direction of the current i2 on the upper section of the wire (that is, which of the red arrows will be correct, if any)? O a. Insufficient information is given. O b. To the left O c. To the right O d. No current will be induced. core

LOOP FIELD DISC MAGNET flux? 2. Consider the magnetic field lines surrounding a disc magnet as pictured at right. The magnet moves from right to left through the wire loop. Describe how the magnetic flux through the surface defined by the loop changes (if at all) as the magnet 1) approaches the loop, 2) passes through the loop, and 3) recedes from the loop. Sketch a graph of magnetic flux through the surface vs. time as the magnet undergoes this motion.

A wire that is 25 meters long carries a current of 15 A to the west. If the magnetic force on the wire due to Earth's magnetic field is 5.5 x 10-3 N downward (toward the ground), fınd the magnitude and direction of the magnetic field strength. Which formula will you use. Show your work. What is the field strength? * What is its direction?

An electron moves at right angles to a magnetic field of 0.23 T. Part A What is its speed if the force exerted on it is 9.1x10-15 N? Express your answer using two significant figures. IVO ADC ? v = m/s

A hypothetical charge -0.13pc with a mass 72fg moves in a circular path perpendicular to a uniform magnetic field with a magnitude of 81mt and is directed into the page. If the speed of the hypothetical charge is 61km/s: A.) Determine the radius of the circular path. B.) Determine the time interval required to complete one revolution.  • What are the given in the problem? • What are the unknown variables? • What are the equations that you are going to use? • Solution and answer for Part A. • Solution and answer for Part B.

The magnetic field is pointing from left to right in the plane of this screen. An electron momentarily has a velocity from the bottom of the screen toward the top of the screen. What is the direction of the magnetic force on the electron. a) To the left b) To the right c) into the screen d) out of the screen e) toward the top of screen f) toward the bottom of screen