A circular loop of wire with a radius of 4.0 cm is in a uniform magnetic field of magnitude 0.060 T. The plane of the loop is perpendicular to the direction of the magnetic field. In a time interval of 0.50 s, the magnetic field changes to the opposite direction with a magnitude of 0.040 T. What is the magnitude of the average emf induced in the loop?
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The plane of the loop is perpendicular to the direction of the magnetic field. In a time interval of 0.50 s,
the magnetic field changes to the opposite direction with a magnitude of 0.040 T. What is the
magnitude of the average emf induced in the loop?"
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- A single loop of copper wire, lying flat in a plane, has an area of 8.60 cm² and a resistance of 1.50 2. A uniform magnetic field points perpendicular to the plane of the loop. The field initially has a magnitude of 0.500 T, and the magnitude increases linearly to 2.00 T in a time of 1.12 s. What is the induced current (in mA) in the loop of wire over this time? mA Need Help? ICE ANOTHER Read ItAn L = 47.0 ncm wire is moving to the right at a speed of v = 6.50 m/s across two parallel wire rails that are connected on the left side, as shown in the figure. The whole apparatus is immersed in a uniform magnetic field that has a magnitude of B = 0.910 T and is directed into the screen. What is the emf induced in the wire? If the moving wire and the rails have a combined total resistance of 1.15 Ohms, what applied force would be required to keep the wire moving at the given velocity? Assume that there is no friction between the moving wire and the rails.A 32-turn circular coil of wire has diameter 0.91 m. It is placed with its axis along the direction of the Earth's magnetic field of 42.0 µT and then in 0.200 s is flipped 180°. An average emf of what magnitude is generated in the coil?
- Two moving rods of equal lengths (1.20 m) are moving as shown in the figure. The speed v1 = 1.10 m/s and the speed v2 = 2.00 m/s. If the magnetic field is uniform with a magnitude of 0.60 T, what is the magnitude of the average emf in the loop?At a particular place on the surface of the Earth, the Earth's magnetic field has magnitude of 5.45 x 10-5 T, and there is also a 128 V/m electric field perpendicular to the Earth's surface. (a) Compute the energy density of the electric field. (Give your answer in nJ/m³.) nJ/m³ (b) Compute the energy density of the magnetic field. (Give your answer in μJ/m².) µJ/m³A technician wearing a circular metal band on his wrist moves his hand into a uniform magnetic field of magnitude 2.5 T in a time of 0.18 s. If the diameter of the band is 6.5 cm and the field is at an angle of 45° with the plane of the metal band while the hand is in the field, find the magnitude of the average emf induced in the band.
- A circular loop of wire of radius 0.25 m is exposed to an external magnetic field that is perpendicular to the plane of the loop. For a time, the magnetic field decreases at a rate of 0.025 T/s. What is the magnitude of the induced emf in the loop? 5.16 x 10-3 V 1.23 x 10-3 V 4.90 x 10-3 V 8.15 x 10-3 VA square loop of conductive wire Is laid flat against this computer screen. Each side of the square is 3.0m long. A 5.0T magnetic field passes through the loop, oriented so that it points directly out of your screen. If the magnetic field drops to only 2.0T over the course of 1.5 seconds, what emf will be produced in the square loop?A circular loop of wire has its radius shrink from 3 m to 1.5 m over 5 seconds. The area vector of the wire stays parallel with a magnetic field of magnitude 4 μT. What is the induced emf? 0 V 3.77e-6 V 0.94 V 1.70e-5 V
- A patient having an MRI scan has neglected to remove a copper bracelet. The bracelet is 6.0 cm in diameter and has a resistance of 0.04 N. The magnetic field in the MRI solenoid is directed along the person's body from head to foot; her bracelet is perpendicular to the magnetic field. As a scan is taken, the magnetic field in the solenoid decreases with the rate of 1.0 T/s. What is the magnitude of the current induced in the bracelet? O 70.8 mA O 0.283 A O 0.71 A 2.83 mA O 96.0 mAA single ring is moving through a magnetic field that varies in strength. The ring has a radius of 9.5 cm and it is moving at a velocity of 30 S The ring is oriented so that the magnetic field passes directly through the ring. It moves such that the magnitude of the magnetic field through the ring changes from 0.84 T to 2.25 T in 0.21 s. What is the magnitude of the induced emf in the ring? emf = V You measure the induced current in the ring as 1.54 A. What is the resistance of the ring? R = Ω What changes could you make in the system to increase the induced emf in the ring? Increase the number of loops in the ring Increase the velocity of the ring through the magnetic field Decrease the velocity of the ring through the magnetic field Decrease the area of the ring Increase the area of the ring Decrease the number of loops in the ring O O O O OA single loop of steel wire, lying flat in a plane, has an area of 7.00 cm2 and a resistance of 2.40 Ω. A uniform magnetic field points perpendicular to the plane of the loop. The field initially has a magnitude of 0.500 T, and the magnitude increases linearly to 1.50 T in a time of 1.12 s. What is the induced current (in mA) in the loop of wire over this time?