In an AC generator, a coil with N turns of wire spins in a magnetic field. Of the following choices, which does not cause an increase in the emf generated in the coil? (a) replacing the coil wire with one of lower resistance (b) spinning the coil faster (c) increasing the magnetic field (d) increasing the number of turns of wire on the coil

Q: In a model AC generator, a 495 turn rectangular coil 10.0 cm by 23 cm rotates at 123 rev/min in a…

A: Given that the value of the number of turns and area and angular velocity and also given the value…

Q: A generator uses a coil that has 80 turns and a 0.40-T magnetic field. The frequency of this…

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Q: The rotating loop in an AC generator is a square 10.0 cm on each side. It is rotated at 60.0 Hz in a…

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Q: A magnetic field is perpendicular to the plane of a single-turn circular coil. The magnitude of the…

A: Recall Faraday's law of electromagnetic induction ε=dϕ/dt

Q: The figure attached shows a resistor that is connected in a circuit consisting of a circular loop…

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Q: A 60.0-Hz generator delivers an average power of 75 W to a single light bulb. When an induced…

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Q: Which of the following statements can describe the process of the law of induction? A. Increase in…

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Q: 7. Which of the following statements can describe the process of the law of induction? A. Increase…

A: According to law of induction:e=-dϕdt  =-NddtB.Ae=NddtBAcoswte=NBAwsinwt

Q: steadily from 1.3A to 2.5A in the opposite direction,in 0.12 s. The average emf induced in the coil…

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Q: A magnet is placed into a coil. The induced emf across the coil is 10 mV. What would the emf be if…

A: The expression for the induced emf in the coil is      ε=NBAω Here N is number of turns, B is the…

Q: 1. In an AC generator, a coil with N turns of wire spins in a magnetic field. Of the following…

A: We know that emf generated in coil is given by  ε=NBAω

Q: An ac electrical generator is made by turning a flat coil in a uniform constant magnetic field of…

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Q: The figure below shows a flexible loop of metal wire with a radius of 15.0 cm. It lies in a magnetic…

A: Given Data : The radius of the ring is given as r=15cm×1m100cm=0.15m The magnetic field is given as…

Q: d] The coil of an AC generator consist of 12 turns of wire, each of an area 0.090 m², and the total…

A: According to the question  No. of turns in the coil, N = 12  Area of the coil, A = 0.090 m2 Total…

Q: To construct an ac generator having an output of 15 V maximum when rotated at 50 Hz, a uniform…

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Q: In a model AC generator, a 495 turn rectangular coil 10.0 cm by 23 cm rotates at 123 rev/min in a…

A: Given that--- In a model AC generator, a 495 turn rectangular coil 10.0 cm by 23 cm rotates at 123…

Q: What is the magnitude of the rate at which the current though a 0.30-H coil is changing if an emf of…

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Q: An AC generator is to have a maximum output of 340 V. Each coil has an area of 0.132 m2 and a…

A: SOlution: given that E = 340 V A = 0.132 m2 R = 16.5 ohm B = 0.766 T f = 39.9 Hz

Q: Assuming all other factors remain constant, what will happen to the induced emf if: (a) the number…

A: Introduction: The change in magnetic flux through the coil leads to the production of induced emf.…

Q: 9. As a coil in an AC generator rotates in a magnetic field, it reaches the position shown in the…

A: Since you have asked multiple question, we will solve the first question for you. If you want any…

Q: An oscillating LC circuit consisting of a 6.0 nF capacitor and a 2.0 mH coil has a maximum voltage…

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Q: A magnetic field is perpendicular to the plane of a single-turn circular coil. The magnitude of the…

A: Given data *The magnitude of the induced emf on the coil is circle ecircle = 0.61 V *The given…

Q: You are designing an AC generator which consists of 100 turns of wire of area 0.09 m² and total…

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Q: An ac electrical generator is made by turning a flat coil in a uniform constant magnetic field of…

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Q: A 75 turn, 8.5 cm diameter coil of an AC generator rotates at an angular velocity of 8.5 rad/s in a…

A: Since you have asked multiple subparts, we will solve the first three for you. If you want a…

Q: What is the CORRECT statement about Faraday's law of induction? a. The emf produced in a loop of…

A: Faraday law od induction says that emf produced is proportional to the rate of change(time…

Q: The AC current in the stator induces a voltage across an insulator(rubber) gap and into the rotor…

A: An AC Motor converts electric energy into mechanical energy. An AC Motor uses alternating current -…

Q: An AC motor can be turned into an AC generator by: A) applying a reverse voltage to the terminals of…

A: Ac motar work on priciple of electromagnetic induction according to this change in flux Produce…

Q: A magnetic field is perpendicular to the plane of a single-turn circular coil. The magnitude of the…

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Q: 4. A closely wound rectangular coil of 100 turns has dimension of 12.0cm x 25.0cm. In time t=0.0800…

A: Given:Number of turns, N=100 Dimensions of rectangular coil = 12.0cm x 25.0cm Time interval,…

Q: You are to design an AC generator that has 800 circular windings, each with a radius of 1.75m. The…

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Q: An AC generator with ten turns of wire, each having area A = 0.08 m2, and having a total resistance…

A: Given  Area A=0.08m2 Resistance R=12Ω Magnetic field B=0.5T Frequency f=70Hz No of coils N=10

Q: A 181-turn circular coil of radius 2.85 cm and negligible resistance is immersed in a uniform…

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Q: The 335 kV AC electricity from a power transmission line is fed into the primary coil of a…

A: Given Data:   The input voltage is, Vp=335 kV The fraction of the numbers of turns in secondary coil…

Q: A generator uses a coil that has 370 turns and a 0.49-T magnetic field. The frequency of this…

A: as per givenno of turns=370Applied mag field= 0.49 Tfrequency of generator= 60 Hzemf =120 V

Q: An oscillating LC circuit consisting of a 6.0 nF capacitor and a 2.0 mH coil has a maximum voltage…

A: Maximum energy stored is  U = 48 nJ

Q: Consider a 12-loop coil with a diameter of 8 cm; a north-leading bar magnet moves further away from…

A: Given  No of loops, N = 12  Diameter, D = 8 cm  The magnetic field changes from  0.065 T to 0.00065…

Q: An oscillating LC circuit consisting of a 6.0 nF capacitor and a 2.0 mH coil has a maximum voltage…

A: Given data: The capacitance of capacitor is C=6.0 nF. The inductance of coil is L=1 mH. The maximum…

Q: An oscillating LC circuit consisting of a 6.0 nF capacitor and a 2.0 mH coil has a maximum voltage…

A: SOLUTION AS

Electromagnets

The word "electromagnet" is composed of two words, ‘electro’ and ‘magnet’. It is a type of magnet in which an electric current helps in the generation of a magnetic field. Electromagnets usually consist of two major parts, wire and a coil around which the wire is wound. This is called a solenoid. When an electric current is allowed to pass through the coiled wire, the electric current produces a magnetic field. This magnetic field is present only when current is passing through the wire.