4. A circular conducting loop of radius r carrying current I as shown in Fig. 4...
For the following situations involving a bar magnet and circular conducting loop, indicate the direction of the induced current in a diagram and explain your reasoning clearly. (a) You move the north pole of the magnet towards the loop, keeping the magnet aligned with the symmetry axis of the loop. (b) You move the south pole of the magnet towards the loop, keeping the magnet aligned with the symmetry axis of the loop. (c) You move the north pole of...
A circular loop of wire, centered at the origin, lies in the xy plane. The loop has a radius of 10.0cm. A cylindrical magnet (radius 0.5 cm and length-5 cm) starts out at rest with its primary axis along the z-axis. The bottom tip of the magnet is a north-pole and is situated at z 8 cm. The magnet is dropped straight down so that it falls north- pole down and it goes straight through the center of the loop....
A flat circular loop of wire of radius R carrying a current I is placed in a uniform magnetic field B that is directed in the plane of the current loop. What is the magnetic moment M of the loop? What is the magnitude of the torque acting on the loop? In which direction the loop will rotate under the influence of this torque?
A strong magnet is placed under a horizontal conducting ring of radius r that carries current I as shown in the figure below. The magnetic field B makes an angle θ with the vertical at the ring's location. (a) what is the magnitude of the resultant magnetic force on the ring? (Use any variable or symbol stated above along with the following as necessary: π) (b) What is the direction of the resultant magnetic force on the ring? to the...
IP A single current-carrying circular loop of radius R is placed next to a long, straight wire, as shown in the figure(Figure 1) . The current in the wire points to the right and is of magnitude I. A. In which direction must current flow in the loop to produce zero magnetic field at its center? Explain. B. Calculate the magnitude of the current in part A. Express your answer in terms of some or all of the variables R,...
A thin coil has 60 circular turns of wire of radius 4 cm. The current in the wire is 8 amperes. (a) What is the magnetic dipole moment of this coil? (b) At a distance of 40 cm from the center of the coil, along the axis of the coil, what is the approximate magnitude of the magnetic field contributed by the coil? The coil is placed with its axis along the x axis. A bar magnet whose magnetic dipole...
A circular conducting loop with radius 5.20 cm is placed in a uniform magnetic field of 0.770 T with the plane of the loop perpendicular to the magnetic field, as shown. The loop is rotated 180° about the axis in 0.262 s. What is the average induced emf in the loop during this rotation?
4. Consider a circular loop of wire with a mass m and a radius R. The circular loop is vertical such that gravitational force on the loop points straight down. You may assume this is near the surface of the earth such that the force of gravity has a magnitude FGl mg. The upper half of the circular wire is immersed in a uniform magnetic field B pointing into the page. In the figure below this corresponds to the region...
5. A circular loop in the plane of the page lies in a 0.5T magnetic field that is oriented into the page. The diameter of the loop changes from 20 cm to 8 cm in 0.5 s. Calculate: A. The direction of the induced current. (5 pts) B. The magnitude of the average induced emf. (5 pts) C. The average induced current if the coil resistance is 2.5 Q. (5 pts) 6. Calculate the direction of the current induced in...
A circular conducting loop with radius 3.50 cm is placed in a uniform magnetic field of 0.650 T with the plane of the coil perpendicular to the magnetic field as shown. в Axis The magnetic field decreases to 0.440 T in a time interval of 32.0 ms. What is the average induced emf in the loop during this interval? mV