The square armature coil of an alternating current generator has 200 turns and is 20.0 cm on side. When it rotates at 3600 rpm, its peak output voltage is 120 V. (a) What is the frequency of the output voltage? (b) What is the strength of the magnetic field in which the coil is turning?

Q: A square coil of wire of side 2.25 cm is placed in a uniform magnetic field of magnitude 2.00 T…

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Q: A square coil of wire of side 4.00 cm is placed in a uniform magnetic field of magnitude 2.00 T…

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Q: What is the peak emf (in kV) generated by a 0.260 m radius, 520-turn coil that is rotated one-fourth…

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Q: A square coil of wire of side 2.25 cm is placed in a uniform magnetic field of magnitude 2.00 T…

A: Here length of square = 2.25 cmUniform magnetic field = 2TTurns of the coil (N) = 27.5Resistance (R)…

Q: A coil 2.00 cm in radius, containing 400 turns, is placed perpendicularly in a uniform magnetic…

A: Radius of the coil r=2 cm, number of turns in the coil N=400 which is placed in an uniform magnetic…

Q: A 100-turn square coil of side 20.0 cm rotates about a vertical axis at 4.8 x103 rad/min as…

A: Number of turns = N = 100 Side of the square coil = 20 cm = 0.2 m Area of the coil = A = 0.04 m2…

Q: wire loop with a resistance of 2.5 ohms and a radius of 0.255m is places in a magnetic field that…

A: Given resistance of wire = 2.5 ohms radius of wire =  0.255 m  B(t)=0.25e^(-.5t) We have to…

Q: A 100-turn square coil of side 20.0 cm rotates about a vertical axis at 5.3 x103 rad/min as…

A: An electric generator rotates a coil in a magnetic field, inducing an emf given by emf = ωNAB sinωt…

Q: A flat, square, 75-turn coil of wire is rotated from having its plane perpendicular to an external,…

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Q: A square coil of wire of side 2.90 cm is placed in a uniform magnetic field of magnitude 2.00 T…

A: a  Area of square coil A= l2                                          A= 2.902= 8.41 cm2=…

Q: A rectangular coil with sides 0.140 m by 0.210 m has 513 turns of wire. It is rotated about its long…

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Q: What is the peak emf generated by rotating a 1070-turn, 16 cm diameter coil in the Earth’s 5·10−5 T…

A: Number of turns (N) = 1070 Diameter (d) of coil = 16 cm = 0.16 m Magnetic field (B) = 5×10-5 T Time…

Q: A coil of 10.0 turns is in the shape of an ellipse havinga major axis of 10.0 cm and a minor axis of…

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Q: An emf of 17.0 mV is induced in a 480-turn coil when the current is changing at the rate of 10.0…

A: The self induced emf in a RL circuit is defined as ε=L∆I∆t or we ca write  L=ε∆I∆t In this question,…

Q: A square coil of wire of side 2.50 cm is placed in a uniform magnetic field of magnitude 1.75 T…

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Q: A square coil of wire of side 3.95 cm is placed in a uniform magnetic field of magnitude 2.00 T…

A: Given data: Number of turns in the coil, N=32.0 turns Magnetic field, B =2.00 T Side of the square,…

Q: A square coil, enclosing an area with sides 2.0 cm long, is wrapped with 2 500 turns of wire. A…

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Q: magnetic flux through each turn of the coil

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Q: In a 280-turn automobile alternator, the magnetic flux in each turn is . = 2.50 x 10* cos wt, where…

A: The emf induced due to N closely spaced coils is given by Lenz's law:ε=-NdϕBdt………(1)where,ϕB is the…

Q: A square coil of wire of side 2.35 cm is placed in a uniform magnetic fleld of magnitude 1.50 T…

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Q: A 100-turn square coil of side 20.0 cm rotates about a vertical axis at 4.9 x103 rad/min as…

A: Faraday's law of induction states that an emf is induced in a coil when there is a change in the…

Q: A 105-turn square wire coil of area 0.040 m2 rotates about a vertical axis at 1,800 rev/min, as…

A: Emf induced in the coil ε=dϕdt=ddtNBAcosθ=NBAωsinθ            ω=dθdtεmax=NBAω            sinθmax=1

Q: Calculate the induced electric field (in V/m) in a 42-turn coil with a diameter of 19 cm that is…

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Q: What is the peak emf (in kV) generated by a 0.280 m radius, 400-turn coil that is rotated one-fourth…

A: The value of radius and number of turns of the coil and time and magnetic field. Then We have to…

Q: A square coil of wire of side 2.35 cm is placed in a uniform magnetic field of magnitude 2.00 T…

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Q: A coil with an inductance of 2.0 H and a resistance of 10ohm is suddenly connected to an ideal…

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Q: The armature of a small generator consists of a flat, square coil with 120 turns and sides with a…

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Q: A square coil of wire of side 3.05 cm is placed in a uniform magnetic field of magnitude 1.75 T…

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Q: Determine the induced emf in the alternator as a function of time. (Assume is in V.) = (b)…

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Q: A 500-turn coil of area 0.00200 m^2 is rotated in a 2.00 T magnetic field. At what frequency, f,…

A: When coil rotated in a magnetic field, Flux linked with the coil at time 't' ; a) ϕ=NBA cosωt…

Q: What is the peak emf (in kV) generated by a 0.230 m radius, 520-turn coil that is rotated one-fourth…

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Q: The figure shows three situations in which identical circular conducting loops are in uniform…

A: Given data: A figure showing three situations in which uniform magnetic fields that are either…

Q: The armature of a small generator consists of a flat, square coil with 120turns and sides with…

A:

Q: A square coil of wire of side 3.90 cm is placed in a uniform magnetic field of magnitude 2.25 T…

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Q: A coil with an inductance of 2.6 H and a resistance of 8.2 Ω is suddenly connected to an ideal…

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Q: A circular coil with 65 turns and radius 18.0 cm is placed around an electromagnet that produces a…

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Q: A square coil of wire of side 3.20 cm is placed in a uniform magnetic field of magnitude 2.25 T…

A: The area of a square coil is, A=3.20 cm3.20 cm=0.032 m0.032 m=1.024×10-3 m2 The magnetic field is,…

Q: A 100-turn square coil of side 20.0 cm rotates about a vertical axis at 5.9 ×10 rad/min as indicated…

A: (given) Number of turns in the coil = 100               Side of square coil = 20 cm…

Q: the coil's sides are 14.6 cm long, the external magnetic field strength is Bext = 0.783 T, the coil…

A: Sides, a = 14.6 cm = 14.6×10-2 = 0.146 m Magnetic field, Bext = B = 0.783 T Number of turns, n = 37…

Q: A rectangular coil of 80 turns has dimensions of 34 x 52 cmcm and is located in a uniform 2 TT…

A: Given: The rectangular coil has 80 turns. The dimension is 34 cm x 52 cm. The magnetic field is 2 T.…

Q: A 100-turn square coil of side 20.0 cm rotates about a vertical axis at 2.8 x103 rad/min as…

A: (given) N is the number of turns = 100           Side of square coil = 20 cm…

Q: An emf is induced by rotating a 1000 turn, 20.0 cm diameter coil in the Earth's 4.95 ✕ 10−5 T…

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Q: What is the induced emf in the below coil if it is moving upward at 4.2 m/s in a uniform magnetic…

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Q: Is the maximum magnetic field strength doubled when exciting two coils at the same time? If not,…

A: Is the maximum magnetic field strength doubled when exciting two coils at the same time.

Q: Suppose that a 0.25 m radius, 500 turn coil produces an average emf of 11300 V when rotated…

A: Here, εavg=NAB∆t=11300V The distance covered in one-fourth revolution will be, ∆θ=14×2π=π2

Q: Consider a coil with an area of 0.1 m2 and 17 turns placed in a magnetic field that is perpendicular…

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Q: A square coil of wire of side 3.30 cm is placed in a uniform magnetic field of magnitude 2.50 T…

A: Consider the side of the square coil be l, its area be A, the magnetic field be B, the number of the…

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.