The armature of a small generator consists of a flat, square coil with 120 turns and sides with a length of 1.60 cm. The coil rotates in a magnetic field of 0.0750 T. What is the angular speed of the coil if the maximum emf produced is 24.0 mV?
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The armature of a small generator consists of a flat, square
coil with 120 turns and sides with a length of 1.60 cm. The coil rotates
in a magnetic field of 0.0750 T. What is the angular speed of the coil if
the maximum emf produced is 24.0 mV?
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- The figure below displays a circular loop of metal wire in a uniform magnetic field pointing into the page. The radius of the loop is 13.0 am and the magnitude of the field is 0.160 T. You grab points A and B and pull them in opposite directions, stretching the loop until its area is nearly zero, taking a time of 0.180 s to do so. What is the magnitude of the average induced emf in the loop (in mV) during this time? x x * ↑The figure below displays a circular loop of aluminum wire in a uniform magnetic field pointing into the page. The radius of the loop is 11.0 cm and the magnitude of the field is 0.120 T. You grab points A and B and pull them in opposite directions, stretching the loop until its area is nearly zero, taking a time of 0.210 s to do so. What is the magnitude of the average induced emf in the loop (in mV) during this time? X * * * X * * mV X x XÓT X A X *3** B X X x x X x X X xA 65 turn, 10.0 cm diameter coil rotates at an angular velocity of 8.00 rad/s in a 1.30 T field, starting with the normal of the plane of the coil perpendicular to the field. Assume that the positive max emf is reached first. a. What (in V) is the peak emf? b. At what time (in s) is the peak emf first reached? c. At what time (in s) is the emf first at its most negative? d. What is the period (in s) of the AC voltage output?
- A 10-turn generator coil with area 0.150 m2 rotates in a 1.25-T magnetic field. At what frequency should the coil rotate to produce a peak emf of 150 V?Figure shows a 100-turn coil of wire of radius 12 cm in a 0.15 T magnetic field. The coil is rotated 90° in 0.30 s, ending up parallel to the field. What is the average emf induced in the coil as it rotates?The figure below displays a circular loop of nickel wire in a uniform magnetic field pointing into the page. The radius of the loop is 11.0 cm and the magnitude of the field is 0.140 T. You grab points A and B and pull them in opposite directions, stretching the loop until its area is nearly zero, taking a time of 0.190 s to do so. What is the magnitude of the average induced emf in the loop (in mV) during this time? x X X X x mV X x x x x x A Ax x x x 90x B x x x x X x x X x
- A student is performing a physics lab to test Faraday's Law. She places an 85-turn wire loop of radius 5 cm perpendicular to a magnetic field. She takes 0.9 seconds to decrease the magnetic field to a final value of 2.3 T, and measures an induced voltage (in the loop) of magnitude 1.1 V. Calculate the initial strength of the magnetic field.(Give your answer in tesla but don't include the units.)A circular wire coil with 25 turns and radius 1.02 cm is placed in a uniform magnetic field of strength 6.04 T, directed perpendicular to the plane of the wire loops. Over a period of 1.85 s, the magnetic field fades away to zero. What is the average induced emf (voltage) in the coil over this period of time? 0.016 V 0.035 V 0.043 V 0.027 VA 34-turn circular coil of wire has diameter 0.97 m. It is placed with its axis along the direction of the Earth's magnetic field of 41.0 μT and then in 0.200 s is flipped 180°. An average emf of what magnitude is generated in the coil? mV
- A fixed 17.4-cm-diameter wire coil is perpendicular to a magnetic field 0.56 T pointing up. In 0.29 s , the field is changed to 0.35 T pointing down. What is the average induced emf in the coil?A 500-turn coil of area 0.00200 m^2 is rotated in a 2.00 T magnetic field. At what frequency, f, must the coil be rotated so that the generator produces a voltage amplitude of 250.0 V? Then, if this generator is to be used to power a device which requires a voltage amplitude of 750.0 V, what is the turns ratio of the transformer required to get the appropriate input voltage? What current is transferred to the device if the generator produces 1.00 A of current? Please also explain and show the steps you used to get there/the physics behind why/how you got to the answer to help me better understand. Thank you soo much. Also, the work and the explanation or most important because I already have the correct answer - I'm just unsure of how to get there.A 75 turn, 10.0 cm diameter coil rotates at an angular velocity of 8.00 rad/s in a 1.40 T field, starting with the normal of the plane of the coil perpendicular to the field. Assume that the positive max emf is reached first. a)What (in V) is the peak emf? b) At what time (in s) is the peak emf first reached? c) At what time (in s) is the emf first at its most negative? and d) What is the period (in s) of the AC voltage output?