An electric generator contains a coil of 100 turns of wire, each forming a rectangular loop 50.0 cm by 30.0 cm. The coil is placed entirely in a uniform magnetic field with magnitude B = 3.50 T and initially perpendicular to the coil's plane. The coil is rotated with an angular speed of 100 rev/min about an axis perpendicular to B. The total resistance is 100 N. What is the total magnetic force acting on the coil when the induced emf is maximum.
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Q: An electric generator contains a coil of 100 turns of wire, each forming a rectangular loop 50.0 cm…
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A: electric generator contains a coil of 130 turns of wire, each forming a rectangular loop 71.3 cm by…
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- A coil is wrapped with 500 turns of wire on the perimeter of a circular frame (radius = 8.6 cm). Each turn has the same area, equal to that of the frame. A uniform magnetic field is applied perpendicular to the plane of the coil. This field changes at a constant rate from -8.0 to -7.5 mT in a time of 7.7 ms. What is the magnitude of the induced emf in the coil at the instant when the magnetic field has a magnitude of −7.75 mT?An electrical generator consists of a circular coil of wire of radius 2.50 cm and with 20 turns in the coil. This coil rotates at a rate of 30 revolutions per second in a uniform magnetic field of strength 0.25 T. What is the induced EMF (voltage) in this generator, averaged over a quarter of a revolution (a 90o turn)? 9.4 V 37.6 V 24.2 V 18.8 VA circular coil with 65 turns and radius 18.0 cm is placed around an electromagnet that produces a uniform magnetic field through the coil and perpendicular to the plane of the coil. As the electromagnet powers up, the field it produces increases linearly from 0 to a maximum of 3.50 T in 0.120 s. If the total resistance of the coil is 5.00 0, what is the magnitude of the average current induced in the circular coil as the electromagnet powers up?
- A coil of wire containing four circular loops with radius 0.4 m lies in the plane of the page. A uniform magnetic field points into the page, increasing from 0.4 T to 0.6 T in 0.2 s. Find the magnitude and direction of the emf generated in the coil.A helicopter has blades with a length of L=4 m. They are in the Earth's magnetic field, which is B = 0.6 × 10−¹T. If they spin at an angular speed of 15 rev/s about the center axis (which is connected to the motor), and the magnetic field lines are perpendicular to the plane of the rotor blades, what is the magnitude of the induced EMF between the blade tip and the central axis? The induced EMF is equal to ? +A circular coil (670 turns, radius = 0.079 m) is rotating in a uniform magnetic field. At t = 0 s, the normal to the coil is perpendicular to the magnetic field. At t = 0.020 s, the normal makes an angle of 45 degrees with the field because the coil has made one-eighth of a revolution. An average emf of magnitude 0.052 V is induced in the coil. Find the magnitude of the magnetic field at the location of the coil.
- A magnetic field is perpendicular to the plane of a single-turn circular coil. The magnitude of the field is changing, so that an emf of 0.87 V and a current of 3.8 A are induced in the coil. The wire is then re-formed into a single-turn square coil, which is used in the same magnetic field (again perpendicular to the plane of the coil and with a magnitude changing at the same rate). What (a) emf and (b) current are induced in the square coil? (a) Number Mi Units (b) Number eTextbook and Media Hint UnitsAn electric generator contains a coil of 100 turns of wire, each forming a rectangular loop 50.0 cm by 30.0 cm. The coil is placed entirely in a uniform magnetic field with magnitude B = 3.50 T and initially perpendicular to the coil's plane. The coil is rotated with an angular speed of 100 rev/min about an axis perpendicular to B. The total resistance is 100 2. What is the total magnetic force acting on the coil when the induced emf is maximum.A loop of wire of radius a = 35 mm has an electrical resistance R = 0.038 Ω . The loop is initially inside a uniform magnetic field of magnitude B0 = 1.8 T parallel to the loop's axis. The magnetic field is then reduced slowly at a constant rate, which induces a current I = 0.20 A in the loop. How long does it take for the magnitude of the uniform magnetic field to drop from 1.8 T to zero? Find the time Δt it takes the magnetic field to drop to zero.
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