A conducting loop of side lengths d = 0.5 m and resistance R = 2.50 is r = 0.25 m next to a long current carrying wire with Iwire = 10 A. The current in the wire, in the direction shown, is reduced to zero in 10 sections at a constant rate. a. b. What is the direction of the induced current induced in the loop? Explain how you determined this. What direction is the total magnetic force in? Explain how you determined this. c
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- A conducting rod slides over two horizontal metal bars with a constant speed v to the left. The entire set up is in a region of uniform magnetic field that is perpendicular to the plane of the rod and bars. If the induced current through the resistor is as indicated, what is the direction of the magnetic field? R out of the page into the page I CSuppose you wish to produce a 1-T magnetic field in a toroid with an iron core for which magnetic susceptibility is x = 3 x 10³. The toroid has a mean radius of 14 cm and is wound with 600 turns. Hint a. What current is required to produce this magnetic field in the iron core? Current of b. For comparison, what current is required to produce the same magnetic field in an air-filled toroid of same geometry? Current of A is needed. Submit Question A is needed for toroid with no iron core. While it is not always practical to have region of magnetic field filled with ferromagnetic materials, this dramatic increase in strength of magnetic field produced is useful in some applications you will see in upcoming chapters. Question Help: Message instructorThe magnetic field at the center of a 1.4-cm-diameter loop is 2.2 mT. a. What is the current in the loop? b. A long straight wire carries the same current you found in part a. At what distance from the wire is the magnetic field 2.2 mT?
- A 1.2 m wire is formed into a single turn, planar loop. The loop carries a current of 8.75 A and it is placed in a uniform 0.7 T field. a. If the wire was made into a square loop, calculate the maximum torque (in Nm units) on the loop due to the magnetic field. Submit Answer Incorrect. Tries 1/10 Previous Tries b. Same question as in part a., except now the wire was formed into a circular loop. Submit Answer Incorrect. Tries 1/10 Previous Tries c. For what angle between the normal to the circular loop and the magnetic field is the torque on the circular loop 50% of the torque computed in part a.? (Express your answer in degrees.) Submit Answer Incorrect. Tries 1/10 Previous TriesMono-ionized atoms (an electron withdrawn) are accelerated and then passed through a speed selector made up of perpendicular electric and magnetic fields. The electric field is 155 V / m and the magnetic field is 0.0315 T. The ions then enter a uniform magnetic field of modulus 0.0175 T which is oriented perpendicular to their speed.at. How fast do the ions move as they emerge from the speed selector?b. If the radius of the path of the ions in the second magnetic field is 17.5 cm, what is their mass?A square coil of wire with a side length of 10cm is looped around 10 times. The coil sits in an increasing nagnetic field. The magnetic field increases linearly from 1T to 2T within 5 seconds. A. What is the illustration of this equation?
- In the diagram below, a bar magnet moves toward a solenoid. Use Lenz's а. Law to find the direction of the induced current in the solenoid and then determine the direction of current flow through the resistor connected to the solenoid. Motion N The direction of the current through the resistor is: A. upward B. downwards In the diagram below, a solenoid moves toward a bar magnet. Use Lenz's Law to find the direction of b. the induced current in the solenoid and then determine the direction of current flow through the resistor connected to the solenoid. Motion The direction of the current through the resistor is: O A. upwards B. downwardsThe earth's magnetic field, with a magnetic dipole moment of 8.0 x 1022 A m², is generated by currents within the molten iron of the earth's outer core. Suppose we model the core current as a 3000-km-diameter current loop made from a 1000-km-diameter "wire." The loop diameter is measured from the centers of this very fat wire. ▼ Part B What is the current density J in the current loop? Express your answer to two significant figures and include the appropriate units. J = Submit Part C Лоор Jwire μA Value Submit Request Answer To decide whether this is a large or a small current density, find the ratio of the current density J in the current loop to the current density of a 3.0 A current in a 1.0-mm-diameter wire. Express your answer using two significant figures. 17 ΑΣΦ VO Units Request Answer ? ?A 10 cm x 10 cm square is bent at a 90° angle. A uniform 5.70x10-2 T magnetic field points downward at a 45° angle.(Figure 1) You may want to review (Pages 843-845). For help with math skills, you may want to review: The Vector Dot Product Figure 45% 5 cm 18 B 1 1 of 1 5 cm 10 cm Part A What is the magnetic flux through the loop? Express your answer with the appropriate units. Value Submit HÅ Provide Feedback Units Request Answer □】?
- The magnetic field at the center of a solenoid L = 75 cm long is B = 0.11 T when a current of I = 3.5 A flows through the solenoid wire. 1. Solve the formula for the magnetic field near the center of a long, tightly wound solenoid for the number of turns, N, in the solenoid. The expression should be in terms of the given variables. 2. Calculate the value of the number of turns, N.The component of the external magnetic field along the central axis of a 78 turn circular coil of radius 32.0 cm decreases from 2.40 T to 0.100 T in 2.00 s. If the resistance of the coil is R=3.00 Ω, what is the magnitude of the induced current in the coil? magnitude: A What is the direction of the current if the axial component of the field points away from the viewer?A square wire loop is on the x and y plane with the center is located on the origin (zero), and the sides are 20cm long. The wire has a 5.0A current traveling clockwise. What is the magnetic field vector at the origin? What is the magnetic field vector at x=5cm, y=0cm? What is the magnetic field vector at x=15cm, y=0cm?