Suppose that when you move a magnet through a 34.5-turn coil at a certain speed, a voltage of 81.8 Volt is induced across the coil. If you move the same magnet through a 239.8-turn coil at the same speed, what voltage will be induced across the coil, assuming both coils are closely packed? The answer is  _____________ Volt. [Write your answer to four decimal places

Q: A flat coil enclosing an area of 20 cm* 30 cm is rotating at 60 rev/sec, with its axis of otation…

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Q: A step-down transformer (turns ratio =1:8) is used with an electric train to reduce the voltage from…

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Q: A coil with loops of area 0.0120 m^2 rotates at 60.0 Hz through a B field of 0. 125 T. How many…

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Q: Two coils are placed near each other and they have a mutual inductance of 879.1 mH. If the current…

A: mutual inductance(M)=879.1 mH=879.1×10-3H  current i(t)=0.5e-1,625.3t to find: induced emf at…

Q: The primary coil of a transformer has N1 = 250 turns, and its secondary coil has N2 = 1500 turns. If…

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Q: An emf of 9.7 x 10-3 V is induced in a coil while the current in a nearby coil is decreasing at a…

A: Given that,The mutual inductance of two coils is 3.6×10-3 Hwhere, ε=9.7×10-3 Vand dIdT=2.7 A/sEmf of…

Q: A coil having 50 turns and an outer and inner diameter of 3cm and 2 cm respectively swings from a…

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Q: Two coils are placed close together in a physics lab to demonstrate Faraday’s law of induction. A…

A: If mutual inductance M then current  in one coil I will causes the flux ϕ in another coil as  ϕ=MI…

Q: At a certain instant the current flowing through a 5.8 H inductor is 3.1 A. The energy in the…

A: Given data The current flowing through the circuit is I = 3.1 A. The inductance of the inductor is…

Q: A simple ac generator consists of a coil with 10 turns (each turn has an area of 50 cm^2). The coil…

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Q: A student uses a coil of radius 12 cm with 95 windings. She then uses a permanent magnet of strength…

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Q: A step-up transformer has Np = 46 turns on the primary coil and Ns = 669 turns on the secondary…

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Q: Two coils are placed close together in a physics lab to demonstrate Faraday’s law of induction. A…

A: Change on current, dI =5 A time, t =1 ms  emf = 9 V

Q: A transformer has 670 primary and 230 secondary turns. An alternating potential of 70 V is applied…

A: Given data:Vp=70 V The number of primary turns is Np=300 The number of secondary turns is Ns=230…

Q: Ex. 7: When 100V D.C. is applied across a coil, a current of 1A flows through it. When 100 V A.C. of…

A: We need to compute-Resistance (R)=?Impedance (Z)=?Self Inductance (L)=?The data given as-Applied emf…

Q: How fast (in rad/s) must a 92-turn coil spin in a 0.039 T field to create a peak voltage of 8.3 V?…

A: Given number of turns = N = 92 strength of magnetic field = B = 0.039 T peak voltage = Vmax = 8.3 V…

Q: Suppose a generator has a peak voltage of 302 V, and its coil with 500 turns and a diameter of 5.48…

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Q: At what angular velocity in rotation/min will the peak voltage of a generator be 540 V, if its…

A: ε0 = 540 V N = 420 turns  d = 6.3 cm = 0.063 m B = 0.290 T To find = Angular velocity in rpm

Q: A 5 kW coil has a length of 45 cm. If a length 5 cm is cut from the coil, what power (in kW) is…

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Q: A coil with a self-inductance of 2.0 H carries a current that I(1) = (2.0 A)sin 120xt. Find an…

A: Given, self inductance of coil L=2HCurrent I(t)=2sin120πt

Q: A simple AC generator consists of 20 coils of wire with an area of 1000 cm² and placed in a region…

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Q: In the figure, a 150-turn coil of radius 2.1 cm and resistance 4.2 Q is coaxial with a solenoid of…

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Q: A metal rod 1 VIT Im long rotates about one of its end perpendicular to a plane whose magnetic…

A: We need to compute-Number of revolution (f)=?The data given as-radius (r)=1π mMagnetic induction…

Q: A student winds a coil of area 38 cm2 with 19 turns. They place it horizontally in a vertical…

A: Given Data, Area of cross-section (A)= 38 cm2 Number of turns (N)=19 Magnetic field (B)=0.2 T…

Q: If the current in a 490 mH coil changes steadily from 29.0 A to 9.0 A in 450 ms , what is the…

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Q: If the current in a 140 mH coil changes steadily from 22.0 A to 10.0 A in 450 ms , what is the…

A: Given data, Inductance L=140 mH Current 22 A-10 A Time t=450 ms

Q: The maximum induced emf in a generator rotating at 200 rpm is 40 V. How fast must the rotor of the…

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Q: An alternating voltage given as; V=100 √2 sin100t is applied to a capacitor of 1 μF. Calculate the…

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Q: A coil with loops of area 0.0120 m^2 rotates at 60.0 Hz through a B field of 0.125 T. How many loops…

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Q: Two coils are placed near each other and they have a mutual inductance of 887.4 mH. If the current…

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Q: The coil of an AC generator has 200 turns of the area 1 m2. If the coil rotates in a uniform…

A: We are given number of turns and area of coil. We are given frequency of rotation. We are also given…

Q: Suppose a generator has a peak voltage of 227V, and its coil with 500 turns and a diameter of 7.33cm…

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Q: A 750-turn solenoid, 26 cm long, has a diameter of 2.5 cm. A 16-turn coil is wound tightly around…

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Q: ull speed, and it draws 2.0 Aw s 10 02. The motor operates at

A: Given: V=120 V I =0.5 A Resistance can be 10 ohm

Q: EMF of 0.218V is induced in a coil when the current in a second coil is changing at a rate of…

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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: A coil consists of 25 loops of wire and has a diameter of 10 cm. Its resistance is 0.1Ω. At t=0 it…

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Q: How many turns of the coil are required in order to produce 2 V of induced voltage at the rate of 5…

A: Given data: Induced voltage is, ε=2 V. Rate of change of magnetic flux is, dϕdt=5 wb/s.

Q: A 300 turns coil is cut perpendicular to the changing magnetic flux of 0 Wb to 50 mWb in 0.1 s. Find…

A: emf =enumber of turns= nchange in mag. flux=∆ϕchange in time= ∆t