Assuming all other factors remain constant, what will happen to the induced emf if: (a) the number of turns of the coil is doubled and the magnetic field through the coil is halved? (b) the magnetic field through the coil is doubled?  (c) the diameter of the coil is doubled and the magnetic field through the coil is halved?

Q: 11. Suppose that the coil illustrated below has a length of L = 20.0 m, a radius of r = 1.00 m, N =…

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Q: Suppose a 50-turn coil lies in the plane of the page in a uniform magnetic field that is directed…

A: Given:  Number of turns,  N = 50  initial Area, A = 0.25 m2 final area,A' = 0 m2 time, t = 0.1 s…

Q: Suppose a 46 turn coil lies in the plane of the page in a uniform magnetic field that is directed…

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Q: Suppose a 50-turn coil lies in the plane of the page in a uniform magnetic field that is directed…

A: The induced emf is given by the rate of change of magnetic flux. e =dϕdt= BdAdt

Q: Suppose a 52-turn coil lines in the plane of the page in a uniform magnetic field that is directed…

A: According to Faraday's law of electromagnetic induction, when magnetic flux linked with coil changes…

Q: A circular coil with a diameter of 22.0 cmand 155 turns rotates about a vertical axis with an…

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Q: A fixed 12.4-cm-diameter wire coil is perpendicular to a magnetic field 0.71 T pointing up. In 0.23…

A: Diameter of coil, d=12.4 cm⇒0.124 m Initial magnetic field, B1=0.71 T Final magnetic field, B2=0.24…

Q: Suppose that a rectangular toroid has 2000 windings and a self-inductance of 0.040 H. If h = 0.10 m…

A: Using the energy stored in an inductor, U=12LI2I=2UL

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 75-turn coil has a diameter of 10 cm. The coil is placed in a spatially uniform magnetic field of…

A: We know that induced emf  ε=-NAdBdt.........(1)

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 rectangular loop of area A is placed in a region where the magnetic field is perpendicular to the…

A: Given : B = Bmaxe−t/τ

Q: A wire loop of radius 0.33 m lies so that an external magnetic field of magnitude 0.35 T is…

A: Radius of loop (r) = 0.33 m Initial magnetic field (B) = 0.35 T Final magnetic field (B') = -0.16 T…

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 coil of wire with 50 turns lies with the cross section of the coil in the plane of the page and…

A: Given data The number of turns in the coil is N = 50 turns. The initial area of the plane is A0 =…

Q: "A square loop of wire is placed in a magnetic field that is perpendicular to its plane. The of each…

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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: When the current through an inductor is decreasing at a constant rate of 0.5A/s, the magnitude of…

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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: When the current in a toroidal solenoid is changing at a rate of 0.03A/s, the magnitude of the…

A: Given data Current changing at a rate of 0.03 A/s Magnitude of induced emf  11.9 mV Current 1.34 A…

Q: A closely wound, rectangular coil of 80 turns has dimensions of 25.0x40.0cm. The plane of the coil…

A: Given value--- Number of turns = 80 . area = 25 cm × 40 cm. Time period T = 0.06 . angle between…

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: A 40-turn coil has a diameter of 19 cm. The coil is placed in a spatially uniform magnetic field of…

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Q: In a 290-turn automobile alternator, the magnetic flux in each turn is PR = 2.50 x 10-4 cos wt,…

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Q: A coil with a self-inductance of 6.0 H is connected to a dc battery through a switch. As šooh as the…

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Q: A circular loop of wire of radius 12.0 cm is placed in a magnetic field directed perpendicular to…

A: When a conductor is placed in a varying magnetic field a potential difference is induced on the…

Q: Consider a coil with 950 loops that is pulled in-between magnetic poles in 0.12 s. The coil…

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Q: Calculate the induced emf if the overall change of magnetic flux in a coil with 17 turns is 4.5 x…

A: When the magnetic flux changes with time, then it causes to induce an emf in a loop. Given(s):…

Q: The current through a coil as a function of time is represented by the equation I(t) = Ae sin(wt),…

A: Induced emf due to the varying current in the first coil…

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: Two coils are wound around the same cylindrical form,like the coils . When the current in the first…

A: Given values: Rate, R=-0.242 A/s Induced emf, ε=1.65×10-3 V Number of turns of the second coil, N=25…

Q: What is the peak emf generated by a 0.250 m radius, 500-turn coil is rotated one-fourth of a…

A: Given data: The radius of the coil is R=0.250 m. The number of the turns in the coil is n=500. The…

Q: A fixed 19.7-cm-diameter wire coil is perpendicular to a magnetic field 0.57 T pointing up. In 0.25…

A: Consider the change in magnetic field be dB, the time interval be dt, the diameter of the wire coil…

Q: A fixed 11.1-cm-diameter wire coil is perpendicular to a magnetic field 0.73 T pointing up. In 0.14…

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Q: What is the magnitude of the induced emf when the magnet is thrust into the coil, given the…

A: Faradays law helps to describe the induction of emf in a conductor and the second law helps to find…

Q: The current through a coil as a function of time is represented by the equation I(t) = Ae-bt…

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Q: A 40 turn conductive loop encloses an area of 0.55 m?. At what constant rate should the magnetic…

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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: An emf of 24.0 mV is induced in a 500-turn coil when the current is changing at a rate of 10.0 A/s.…

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Q: When the current in a toroidal solenoid is changing at a rate of 0.234 A/s, the magnitude of the…

A: Given: current in the toroidal solenoid is changing at a rate of 0.234 A/s induced emf is 9 mV…

Q: A magnetic field of 0.200 T exists within a solenoid of 340 turns and a diameter of 10.0 cm. Within…

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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: At a certain instant the current flowing through a 5.0-H inductor is 3.0 A. If the energy in the…

A: Given data: Current I=3.0A Inductance L=5.0H Change in Energy dE/dt=3.0J/s

Q: A square wire loop 20 cm on a side, with resistance20 m , has its plane normal to a uniform magnetic…

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