2. As portrayed in Figure 9.21, a bar magnet is thrust toward the center of a coil of 10 turns and resistance 15 Q. If the magnetic flux through the coil changes from 0.45 Wb to 0.63 Wb in 0.02 s, what is the magnitude and direction (as viewed from the side near the magnet) of the induced current?
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Q: The bolt of lightnin; 133-turn coil orientec in the lightning bolt
A: Givend=100 mN=133 turnsChange in current, dI=5.22×106 Adt=10.9 μs=10.9×10-6 sr=0.881 m
Q: In Figure a stiff wire bent into a semicircle of radius a = 2.0 cm is rotated at constant angular…
A: angular speed= 40 rev/sB=20mTa=2 cmTo find- Frequency & Induced Emf
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A: The number of turns in the wire coil: N = 10. The radius of the wire coil: r = 1.67 cm (0.0167 m).…
Q: 10. A wire has a resistance of 60.0 ohms, and is bent into a square loop with sides of length 15.0…
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A: Emf is equal to the work done per unit charge
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A: The induced emf is equal to the ratio of change in flux with respect to time. ε=Nϕf-ϕit…
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Q: 7. A circular loop of wire of radius 0.399 m and a resistance of 0.500 Ohms is placed in a spatially…
A: Given,B→(t) = (0.050 T/s2)t2Radius = r = 0.399 mResistance = R = 0.500 Ωa) As per the Faraday's Law…
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Q: A coil has 20 turns each with an area of 1.5 x 10-3 m2. A magnetic field is perpendicular to the…
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Q: 9. A flat circular coil with 90 turns, a radius of 4.50 x 10-2 m, and a resistance of 0.300 N is…
A: Write the given values with suitable variables. N=90A=πr2=π4.5×10-22=6.36×10-3 m2R=0.3 ΩΔBΔt=0.779…
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Q: 9. A flat circular coil with 90 turns, a radius of 4.20 x 10 2 m, and a resistance of 0.500 2 is…
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A: Note-Since we only answer up to 3 sub-parts, we will answer the first 3. Please resubmit the…
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Q: 20. The figure shows a rod that is forced to move at constant speed v = 2.0 m/s along the horizontal…
A: length = L = 10 cm = 0.1 m magnetic field = B = 0.8 T Current = i = 10 mA
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A: According to faraday's law ,changing magnetic flux produces an induced electric field.
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- 3. A loop of wire sits in a uniform magnetic field, everywhere pointing toward you. Due to a changing magnetic flux through the loop, an induced current flows in the wire, clockwise as shown. The area of the loop is 0.590 m^2 , and the magnetic field initially has magnitude 0.950 T. Suppose that, over a time period of 1.55 s, the magnetic field changes from its initial value, producing an average induced voltage of 0.217 V. What is the final value of the magnetic field after this time period? 0.608 T 0.912 T 1.824 T 1.520 TA 8.00-cm-long wire is pulled along a U-shaped conducting rail in a perpendicular magnetic field. The total resistance of the wire and rail is 0.340 2. Pulling the wire at a steady speed of v= 4.00 m/s causes 4.30 W of power to be dissipated in the circuit. /myct/itemView?assignmentProblemID=195605... 34² F2 A 3 E D 80 F3 $ 4 R F a F4 V % L 5 T 0 F5 A 6 B Part A How big is the pulling force? Express your answer with the appropriate units. ► View Available Hint(s) F= Part B Y Submit FO Submit Provide Feedback B = Value What is the strength of the magnetic field? Express your answer with the appropriate units. ► View Available Hint(s) H Value & 7 μÀ μÅ ← F7 N U 3 8 J C FO ? Units Units DII FB 1 M PwC ? 10. 9 K D F9 O 30 a F10 L P 4 F11 + F1223. A single coil of wire of area 6.0x10-3 m² is positioned in a uniform 0.18 T magnetic field as shown. The coil is rotated 90° about axis XY in 4.2x10 s. What average emf is induced by the coil? A. B. с. D. O V 0.13 V 0.26 V 43 V хх ххх X X X X X X X X X X X Y X X X X X X X X X B X X X
- 2. The figure below shows a 99-turn square coil rotating about a vertical axis at at ? = 1,520 rev/min. The length of a side of the coil is 20.0 cm. The horizontal component of the Earth's magnetic field at the coil's location is equal to 2.00 ✕ 10−5 T. a) What is the magnitude of the maximum emf (in mV) induced in the coil by the Earth's magnetic field? mV b) What is the orientation of the coil with respect to the magnetic field when the maximum emf occurs? The plane of the coil is oriented 45° with respect to the magnetic field. The plane of the coil is perpendicular to the magnetic field. The plane of the coil is parallel to the magnetic field.5. A circular coil with a radius of 5 cm is made up of 30 loops. Its orientation makes the magnetic field lines normal to the area of the coil. If the magnetic field is varied from 0.25 T to 0.45 T in 1 hour, what is the average induced EMF in the coil?5. An emf is induced by rotating a 980–turn, 23.0 cm diameter coil in the Earth’s 5.30×10-5 T magnetic field. What average emf is induced, given the plane of the coil is originally perpendicular to the Earth’s field and is rotated to be parallel to the field in 10.0 ms? THIS IS NOT AND WILL NOT BE GRADED
- 1. An AC generator has 85 rectangular loops on its armature. Each loop is 11 cm long and 8 cm wide. The armature rotates at 1500 rpm about an axis parallel to the long side. If the loop rotates in a uniform magnetic field of 0.8 T, which is perpendicular to the axis of rotation, what will be the maximum output voltage of this generator? Volts1. A flat circular coil with 95 turns, a radius of 4.20 × 10−² m, and a resistance of 0.430 is exposed to an external magnetic field that is directed perpendicular to the plane of the coil. The magnitude of the external magnetic field is changing at a rate of AB/At = 0.787 T/s. Find the induced current in the coil. A3. A circular wire loop of radius r = 0.15 m and resistance R = 8.1N rotates about a shaft through its diameter at a constant rate of f = 5.2 Hz in a uniform B = 0.21-T magnetic field directed perpendicular to the rotation axis. The plane of the loop is perpendicular to the magnetic field at time t = 0. (a) Calculate the magnetic flux through the loop at time t = 0.1 s. (b) Calculate the induced emf in the loop at time t = 0.1 s. (c) Calculate the induced current in the loop at time t = 0.1s.