An infinitely long, straight wire carrying current l, passes through the center of a circular loop of wire carrying current 2 as shown below. The long wire is perpendicular to the plane of the loop. Which of the following describes the magnetic force on the loop? OA Inward, along a radius of the loop. OB Upward, along the axis of the loop. •C There is no magnetic force on the loop. 0* Downward, along the axis of the loop. OE Outward, along a radius of the loop. CLEAR MY CHOICE

An infinitely long, straight wire carrying current l, passes through the center of a circular loop of wire carrying current 2 as shown below. The long wire is perpendicular to the plane of the loop. Which of the following describes the magnetic force on the loop? OA Inward, along a radius of the loop. OB Upward, along the axis of the loop. •C There is no magnetic force on the loop. 0* Downward, along the axis of the loop. OE Outward, along a radius of the loop. CLEAR MY CHOICE

Physics for Scientists and Engineers

10th Edition

ISBN:9781337553278

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter28: Magnetic Fields

Section: Chapter Questions

Problem 18P: A particle in the cyclotron shown in Figure 28.16a gains energy qV from the alternating power supply...

See similar textbooks

Similar questions

A straight conductor carrying current i=5.0 A splits intoidentical semicircular arcs as shown in Fig. 2. What is themagnetic field at the center C of the resulting circular loop?Please explain your result.
Two current-carrying loops are identical, except for the direction of the magneticfield in their vicinity. The magnetic field at loop 1 is parallel to the plane of the loop,and the magnetic field at loop 2 is perpendicular to the plane of the loop. Is themagnetic torque exerted on loop 1 greater than, less than, or equal to the magnetictorque exerted on loop 2? Explain.
High-speed flash photography was pioneered by Doc Edgerton in the 1930s, while he was a professor of electrical engineering at MIT. You might have seen examples of his work in the amazing shots of hummingbirds in motion, a drop of milk splattering on a table, or a bullet penetrating an apple . To stop the motion and capture these pictures, one needs a high-intensity, very short pulsed flash, as mentioned earlier in this module. Suppose one wished to capture the picture of a bullet (moving at 5.0×102 m/s ) that was passing through an apple. The duration of the flash is related to the RC time constant, τ . What size capacitor would one need in the RC circuit to succeed, if the resistance of the flash tube was 10.0 Ω ? Assume the apple is a sphere with a diameter of 8.0×10–2 m.
What is the direction of the magnetic field that produces themagnetic force on a positive charge as shown in each of thethree cases in the figure below, assuming B is perpendicularto v ?
A metal wire of mass m slides without friction on two horizontal rails spaced a distance d apart, as in the figure below. The track lies in a vertical uniform magnetic field . Generator G produces a constant current i in the wire and the rails (even as the wire moves). Find the velocity of the wire's motion as a function of time, assuming it to be stationary at t = 0. (Use any variable or symbol stated above along with the following as necessary: B for the magnitude of . All quantities are in SI units. Enter the sign of the expression, taking right to be positive.)
A proton moving at speed v = 1.00 x 106 m/s enters a region in space where a magnetic fi eld givenby B = (–0.500 T) z exists. The velocity vector of the proton is at an angle θ = 60.0° with respect tothe positive z-axis. a) Analyze the motion of the proton and describe its trajectory (in qualitativeterms only). b) Calculate the radius, r, of the trajectory projected onto a plane perpendicular to themagnetic fi eld (in the xy-plane). c) Calculate the period, T, and frequency, f, of the motion in thatplane. d) Calculate the pitch of the motion (the distance traveled by the proton in the direction ofthe magnetic fi eld in 1 period).
1-While the current I is flowing through the infinitely long wire, answer the following questions when a rectangular frame with resistance R, with long side b and short side a at a distance from the wire, is approached to the wire with speed v a)The direction of the current induced on the frame, b)The magnetic flux formed on the frame by the current passing through the wire, c)Find the stress and current induced in the wire. d)What would be the direction of the current induced on the frame if the frame were moved to the right with the same velocity? e)If after a certain time the current through the wire is gradually reduced, find the total charge accumulated on the frame.
A very long, straight current-carrying wire is bent at the middle two different ways, sothat it takes the shapes depicted in figures a) and b). Find the direction and magnitude of themagnetic field in both cases at the center C of the semicircle (of radius R = 10 cm), if the currentflowing in the wire is I = 2 A.
A long, straight conducting wire crosses the center of an iron ring that is at rightangles to its plane. If the electric current in the conductor increases, can we say that an electric current has been “induced” in the ring? Justify your answer.
We have discussed in the lectures that on the equator earth’s magnetic field is approximately 50µT in strength andpoints northward. Suppose a proton from the sun manages to get through the van Allen belt and hits the magnetic field at a right angle with a speed of v = 150km/s. We have discussed in class that the particle will move on a circle path. a) What is the radius of this path?b) What is the synchrotron frequency?
A particle in the cyclotron shown in Figure 28.16a gains energy qV from the alternating power supply each time it passes from one dee to the other. The time interval for each full orbit is T=2=2mqB so the particles average rate of increase in energy is 2qVT=q2BVm Notice that this power input is constant in time. On the other hand, the rate of increase in the radius r of its path is not constant. (a) Show that the rate of increase in the radius r of the panicles path is given by drdt=1rVB (b) Describe how the path of the particles in Figure 28.16a is consistent with the result of part (a). (c) At what rate is the radial position of the protons in a cyclotron increasing immediately before the protons leave the cyclotron? Assume the cyclotron has an outer radius of 0.350 m, an accelerating voltage of V = 600 V, and a magnetic field of magnitude 0.800 T. (d) By how much does the radius of the protons path increase during their last full revolution? Figure 28.16 (a) A cyclotron consists of an ion source at P, two does D1 and D2 across which an alternating potential difference is applied, and a uniform magnetic field. (The south pole of the magnet is not shown.) (b) The first cyclotron, invented by E. O. Lawrence and M. S. Livingston in 1934.
At a point P on the center axis of a magnetic field created by a sufficiently long solenoid, we divide the magnetic field strength vector into a circular loop of the solenoid coil as shown below to add all the magnetic fields they create. (Let's simplify to continuous which isn't continuous). Complete this task to show that the magnetic field strength is "first image"at P point.