Course Contents » .. » Faraday's Law » 23.13 - Faraday's Law of Induction: Lenz's Law If the distance between the wire and the center of the loop is increase by a factor of 3 times, by what factor does the emf induced in the loop change? Timer 13аметки Wie Col Послать Ответ Tries 0/10 Wire Coil

Q: A power transmission line feeds input power at 2300 V to a stepdown transformer with its primary…

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Q: A solenoid with an inductance = 8.0*10^-3 H carries current of 1.0 A. The current in the solenoid…

A: Given, Inductance of solenoid L = 8 x 10-3 H Current I1 = 1A Current I2 = 0 A Time t = 0.1…

Q: A 680 loop circular armature coil with a diameter of 7.4 cm rotates at 130 rev/s in a uniform…

A: Given Number loop is N=680 Diameter of the coil is d=7.4 cm=7.4×10-2 m Angular speed is given as…

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: Shown in the following figure is a long, straight wire and a single-turn rectangular loop, both of…

A: Given Shown in the following figure is a long, straight wire and a single-turn rectangular loop,…

Q: A coil is wound as a transformer of rectangular cross-section. If all the linear dimensions of the…

A: Self inductance L= μ0 N2 A / l = μ0 n2 lA

Q: A current of 4.25 A is going through a 7.5 mH inductor is switched off. It takes 8.09 ms for the…

A: Given: The current in the inductor is 4.25 A. The inductance of the inductor is 7.5 mH. The time…

Q: 1) A voltage is varied in a primary solenoid with 2900 +/- 100 turns of coil. The length of the…

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Q: In a coil with an inductance of 5 mi, the current changes in 0.1 ms by 0.2 A. How much…

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Q: In a single-loop coil, the flux is given by Φ=3 sin t + 5 cos t. What is the magnitude of the…

A: Induced emf may be defined as  the rate of change of flux with respect to time.  If E be induced emf…

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: The maximum induced emf in a generator rotating at 210 rpm is 45 V. How fast must the rotor of the…

A: Given that: E1=45 vω1=210 rpmE2=56 vω2=?

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

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Q: Suppose a large power plant generates electricity at 12.0 kV. Its old transformer once converted…

A: The equation for the current in terms of power and voltage is,

Q: If two coils placed next to one another have a mutual inductance of 5.00 mH, what voltage is induced…

A: Mutual inductance, M = 5 mH  change in current, dI =2 A  change in time, dt = 30 ms

Q: Problem 8: Suppose a large power plant generates electricity at 12.0 kV. Its old transformer once…

A: Part (a)Find the relation between current, power and voltage.

Q: Shrinking Loop. A circular loop of flexible iron wire has an initial circumference of 164 cm, but…

A: Write the expression for the circumference. Here, R is the radius. Write the expression for the…

Q: How much of a change in current over time would produce a self-induced EMF of 6.00V in a  10µH…

A: self induced emf produced, ε=6.00 V Inductance in an inductor, L=10 μH=10×10-6 H=10-5H self…

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 sense coil is placed in the middle of a current spiral. The angle between the surface normal of…

A: Direction of the Magnetic field is parallel to the current spiral axis.

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: conducting rod with length of 20cm is pulled along the a rotated U-shaped (see the figure)…

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Q: The primary coil of an ideal transformer provides 2000 V at 0.01 A. The secondary coil operates on…

A: Voltage in primary coil, Vp=2000 VoltCurrent in primary coil, Ip=0.01 AVoltage in secondary coil,…

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: As the coil of wire in the generator spins, an output potential difference is induced. Explain how…

A: Given that As the coil of wire in the generator spins, an output potential difference is induced. To…

Q: The mutual flux in the core of a 47.9 - cycle transformer that has 800 primary turns and 190…

A: Solution: Given data, Primary turns N1 =800 Secondary turns N2 =190 Mutual flux = 2.17 × 10-6…

Q: What is the energy stored in the inductor shown in the figure after the switch has been closed for a…

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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: What is the energy stored in 1 second in an inductor while carrying current i = 20 + 10 t where t is…

A: Given: EMF induced in the coil, ε=40 mVCurrent carrying in the coil, i=20+10t ATime, t = 1 sec

Q: The voltage across an inductor is proportional to the inductor and the derivative of the current…

A: As we know that,          Voltage across Inductor is given by :…

Q: In the circuit shown in Fig., the switch S has been open for a long time and is suddenly closed.…

A: When switch S is closed the inductor will act as an open circuit and there will be no current…

Q: When I visit family in India, I usually need an adapter to use my US bought electrical devices (hair…

A: Given, Vinput=220 VVoutput=110Vnprimary=100

Q: A toroidal solenoid has a magnitude of induced emf of 10.3 [mV] when the rate of change of the…

A: The objective of the question is to find the number of turns in a toroidal solenoid given the…

Q: The following picture shows a LONG conductor carrying current I. Nearby there is a conducting…

A: (a) The expression of the magnetic field (B) as a function of distance x is B→=μ0I2πx + (b) The…

Q: What is the instantaneous value of the emf in the coil at t= s? Assume that the emf is 22 zero at t…

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Q: A flat circular coil has 80 turns of diameter 20 cm with a total resistance of 40 ohm. The plane of…

A: The coil of N=80 turns and d =20 cm diameter has B magnetic field linked to it. now if the field…

Q: A wire loop of radius 0.30 m lies so that an external mag- netic field of magnitude 0.30 T is…

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Q: The current in a 62 mH inductor changes with time as I = bt2 - at. With a 6 A/s and b = 6 A/s, find…

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Q: Suppose a generator has a peak voltage of 205 V and its 500 turn, 5.5 cm diameter coil rotates in a…

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Voltage Across Inductor

An actor is a passive electrical component that consists of a coil bent in the form of wire which uses electromagnetism to produce electric current through the coil. When the electric current flows through a conductor that is the coil, a magnetic flux is developed around the conductor. This flow of current through the coil creates a magnetic field based on Fleming's Right-hand thumb rule. If there is any decrease in the current passing through the inductor, then the magnetic field will also decrease and energy is released through the generation of electric current. There is also a secondary voltage inducing in the same coil due to the magnetic flux, since it opposes any changes in the electric current flowing through the circuit. An inductor is also called choke, coil, or solenoid. A choke is designed to block certain frequencies when the DC current passes. A winding coil is coated with insulation to give extra insulation and protect the circuit. They are usually tightly wrapped around a central core which is cylindrical in nature so that the magnetic flux can be induced. The solenoid is a three-dimension coil that is used to exhibit electromagnetism when the magnetic field is developed due to the current flowing through the coil. The sign convention of the inductor is the same as the power dissipating device. When the current flows into the positive side of the voltage across the inductor, the value is positive and the inductor dissipates power whereas when the inductor releases the power back to the circuit, the current has a negative sign convention.