Review | Constants A rectangular loop of wire with dimensions 1.80 cm by 7.00 cm and resistance 0.800 is being pulled to the right out of a region of uniform magnetic field. The magnetic field has magnitude 2.40 T and is directed into the plane of (Figure 1). Part A At the instant when the speed of the loop is 3.00 m/s and it is still partially in the field region, what is the magnitude of the force that the magnetic field exerts on the loop? Express your answer with the appropriate units. Figure 1 of 1 X με FB = Value Units Submit Request Answer Part B wwww ? What is the direction of the force that the magnetic field exerts on the loop? to the right downward upward to the left Submit Request Answer Provide Feedback Next >
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- A coil has 180 turns enclosing an area of 10.4 cm². In a physics laboratory experiment, the coil is rotated during the time interval 0.046 s from a position in which the plane of each turn is perpendicular to Earth's magnetic field to one in which the plane of each turn is parallel to the field. The magnitude of Earth's magnetic field at the lab location is 5.00×10-5 T. Part A What is the magnitude of the magnetic flux through one turn of the coil before it is rotated? Express your answer in webers. View Available Hint(s) initial Submit Part B |final = = Submit —| ΑΣΦ = What is the magnitude of the magnetic flux through one turn of the coil after it is rotated? Express your answer in webers. ► View Available Hint(s) ΠΙ ΑΣΦ ? Wb ? WbPart a b and c can you show all the steps work ?Point A in (Figure 1) is 6.0 mm from the wire. Assume that the wire is very long and that all other wires are too far away to contribute to the magnetic field. Figure ww 20 Ω 60 V + 100 Ω . A < 30 Ω 1 of 1 www Part A What is the magnetic field strength at point A? Express your answer with the appropriate units. BA= Submit 2² Provide Feedback μА Value Request Answer Units ?
- Learning Goal: To understand the magnetic force on a straight current- carrying wire in a uniform magnetic field. Part A Magnetic fields exert forces on moving charged particles, whether those charges are moving independently or are confined to a current-carrying wire. The magnetic force F on an individual moving charged particle depends on its velocity v and charge q. In the case of a current-carrying wire, many charged particles are simultaneously in motion, so the magnetic force denends on the total current I and the lenath of Consider a wire of length L = 0.30 m that runs north-south on a horizontal surface. There is a current of I = 0.50 A flowing north in the wire. (The rest of the circuit, which actually delivers this current, is not shown.) The Earth's magnetic field at this location has a magnitude of 0.50 gauss (or, in Sl units, 0.5 x 10-4 tesla) and points north and 38 degrees down from the horizontal, toward the ground. What is the size of the magnetic force on the wire due…A circular coil 15.0 cm in diameter and containing nine loops lies flat on the ground. The Earth's magnetic field at this location has magnitude 5.00 x 10-5 T and points into the Earth at an angle of 53.0 ° below a line pointing due north. A 6.90-A clockwise current passes through the coil. Part A Determine the torque on the coil. Express your answer using three significant figures and include the appropriate units. HA Value Units Submit Request AnswerIn a physics laboratory experiment, a coil with 210 turns enclosing an area of 11.7 cm² is rotated during the time interval 5.00×10-² s from a position in which its plane is perpendicular to Earth's magnetic field to one in which its plane is parallel to the field. The magnitude of Earth's magnetic field at the lab location is 6.60×10-5 T. Part A What is the magnitude of the magnetic flux (initial) through the coil before it is rotated? Express your answer numerically, in webers, to at least three significant figures. ▸ View Available Hint(s) Pinitial Submit 10 xa Xb B T ΑΣΦ X.10⁰ 1.62 107 Previous Answers √x vx X x pond |X| ? Wb X Incorrect; Try Again; 9 attempts remaining The number of turns is not included in the definition of magnetic flux.
- A conductor consists of a circular loop of radius R = 29.0 cm and two long, straight sections as shown in the figure below. The wire lies in the plane of the screen and carries a current I = 1.50 A. Find the maqgnetic field at the center of the loop. magnitude direction ---Select--- I RI decreasing In the figure above, a loop is located near a long wire with current flowing as indicated. 8The original B field penetrating the loop points the page. O If the current in the wire decreases, then the magnetic flux o in the loop 0Therefore, the loop generates an induced B field that points the page. e This induced B field is due to an induced current that flows in the loop.X R The figure above shows two parallel loops of wire having a common axis. The smaller loop (radius r) is above the larger loop (radius R) by a distance x >> R. Consequently, the magnetic field due to the counterclockwise current i in the larger loop is nearly constant throughout the smaller loop. Suppose that x is increasing at the constant rate dx/dt = V. NOTE: Express your answers to parts (a) and (b) in terms of the given variables. (a) Find an expression for the magnetic flux through the area of the smaller loop as a function of x. ÞB(x) = (b) Determine the magnitude of the induced emf in the smaller loop. E = (c) Determine the direction of the current in the small loop. Choose one ▾
- Part A A solid cylindrical conductor with radius 4.50 cm carries a current of 2.00 A. The current is uniformly distributed over the cross- sectional area of the conductor. Find the magnitude of the magnetic field at the distance 2.50 cm from the conductor axis. Express your answer with the appropriate units. HÀ B = Value Units Submit Request AnswerA rectangular loop of wire with dimensions 1.20 cm by 9.00 cm and resistance 0.700 N is being pulled to the right out of a region of uniform magnetic field. The magnetic field has magnitude 2.60 Tand is directed into the plane of (Figure 1) Part A At the instant when the speed of the loop is 3.00 m/s and it is still partially in the field region, what is the magnitude of the force that the magnetic field exerts on the loop? Express your answer with the appropriate units. HẢ ? FB = Value Units Submit Request Answer Part B Figure Provide Feedback RA solenoid is designed to produce a magnetic field of 3.80x10-2 T at its center. It has a radius of 1.80 cm and a length of 47.0 cm, and the wire can carry a maximum current of 13.0 A . For related problem-solving tips and strategies, you may want to view a Video Tutor Solution of Field of a solenoid. Part A What minimum number of turns per unit length must the solenoid have? Express your answer in inverse meters. n = Submit Part B L = ΑΣΦ What total length of wire is required? Express your answer in meters. G| ΑΣΦ Submit Request Answer Request Answer W ? m -1 m