The ratio of transformation is 50. If 220V AC is supplied to its primary coil, voltage in secondary coil will be

Q: Calculate the maximum emf induced ( in units of mV) in the coil by this field.

A: Given That, No. of turns, N=100                    Magnetic field=2*10-5 T                    Area…

Q: A coil consisting of 800 turns, very closely spaced, has an inductance of 4mh and a current of…

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Q: The power consumed by a coil is 300 W when connected to a 30 V dc source and 108 W when connected to…

A: We may describe power as the rate of carrying out work; it is the amount of work done in a given…

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 9.7mV is induced in a coil while the current in a nearby coil is decreasing at a rate of…

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Q: A direct current of 25A creates a flux of 1.4 X 10-4 Wb in a coil of 500 turns.  What is the…

A: Given that, Current I = 25 A Flux ϕ=1.4×10-4 Wb Number of turns = 500

Q: In dc generator the contacts to the rotating loop are made using a split ring and called 2 A) as…

A: DC generators are devices that convert mechanical energy into electrical energy. These devices work…

Q: A step-up transformer is designed to produce 1610 V from a 115-V ac source. If there are 392 turns…

A: The transformers are most commonly used in the power transmission of energy that is electrical in…

Q: The mutual inductance between two coils is 3.25 mH. A changing current in the primary coil resulted…

A: The induced emf is given by  e= Md idt where, M is the mutual inductance, and di/dt is the rate of…

Q: Give difference between AC generator and DC generator.

A: Sl. No.Differentiating PropertyAC GeneratorDC Generator1DefinitionAC generator is a mechanical…

Q: what will be the voltage output of the secondary? what current flows in the secondary circuit? now…

A: Given: Number of turns in the primary  Np= 100           Number of turns in the secondary  Ns = 1000…

Q: A transformer on a pole near a factory steps the voltage downfrom 3 600 V (rms) to 120 V (rms). The…

A: (a) The power delivered to the primary coil is

Q: What is the inductance of a coil if the coil produces an emf of 2.86 V when the current in it…

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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: An induction coil in an automobile is much like an ac transformer that boosts low voltage to high.…

A: Transformer equation can be expressed as NPNS=VPVS

Q: a current of 3.3 A creates a flux of 160micro Wb in a coil of 317 turns. calculate the induced emf…

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Q: A certain generator has armature resistance 0.080 ohms and develops an induced EMF of 440 V when…

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Q: Does the generator at power station produce dc or ac?

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Q: How many turns is required for a coil with a diameter of 48 mm to induce 12 v of electricity when…

A: given that,Diameter, d=12 mm=0.12 memf reduced=12 V∆B=310 T∆t=0.2 secθ=18°

Q: A motor has coils with a resistance of 15 N and operates from a voltage of 240 V. When the motor is…

A: Given Data: The given resistance is: R=15 Ω The voltage of the circuit is: ε=240 V The back emf at…

Q: A coil has an Inductance of 50μH. What voltage is induced across the coil when the rate of change of…

A: Given, Inductance of coil, L = 50 μH rate of change of current, dIdt = 10000 As

Q: How much current would have to pass through a 10.0 mH inductor s would be enough to bring…

A: Hi please find solution to your problem  Formula used  E = 1/2 *L*I^2

Q: the induced current opposes the decay of current in the coil when the main current in the coil…

A: TRUE Self induction :-  Self inductance is the characteristic of the coil itself. The induced…

Q: An emf of 0.70 V is induced across a coil when the current through it changes uniformly from 0.45 to…

A: Given data:  Emf (e) = 0.70 V Initial current = 0.45 A Final current = 0.55 A Time (t) = 0.40 s…

Q: What is the rate at which the current though a 0.30-H coil is changing if an emf of 0.12 V is…

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Q: calculate the peak voltage (in v) of a generator that rotates its 225 turn, 0.100 m diameter coil at…

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Q: The primary winding of a transformer has 261 turns, and the secondary has 30.1.  If the input…

A: NP=261NS=30VP=256 VVS=?

Q: If magnetic coils are powered by AC, why don’t their contacts open and close 120 times per second?

A: The overload relay (OLR) is similar in design which is used in manual motor starters. The basic…

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: Which of the following 120 V ac device costs more to operate: (a) One that draws an rms current of…

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Q: When the current in one coil changes at a rate of 5.6 A/ s, an emf of 6.3 × 10−3 V is induced in a…

A: Mutual indutance is the magnetic flux through coil 2 due to current in coil 1.

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

A: ε1=-MdI2dtM=-ε1dI2dt

Q: The mutual inductance between two coils is 3.25 mH. A changing current in the primary coil resulted…

A: Given data: Mutual inductance of the coil L =3.25mH Current I =5.45mA Resistance R =9 ohms

Q: An EMF of 16 V is induced in a coil of inductance 4 H. The rate of change of current must be

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Q: The voltage in an AC ckt varies harmonically with time with a maximum of 180V. At what angle in its…

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Q: A typical wall outlet voltage in the United States is 120 volts. Personal MP3 players require much…

A: Given data:  Primary Voltage (Vp) = 120 V Second voltage (Vs) = 104.2 mV Primary turns (Np) = 6908…

Q: If the peak value of a 60Hz generator is 160V, what is the instantaneous voltage after the loop has…

A: Given data The frequency of the generator is given as f = 60 Hz. The Peak value of the generator is…

Q: A current of 5.75A flows in the coul of wire from an applied voltage of 120V. The motor operates at…

A: I = 5.75 A  Vapplied = 120 V  Back emf ( E ) = 32 V

Q: Why do voltage, current, and power go through zero 120 times per second for 60-Hz AC electricity?

A: Alternative current is in a sinusoidal form.

Q: Why do we use AC voltages in our households over DC?

A: AC voltages are used for n households over DC as these are capable of converting voltage level from…

Q: Calculate the peak voltage of a generator that rotates its 215 turns, 0.100 m diameter coil at 3600…

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Q: Suppose the speed of rotation of the coil in an AC generator is doubl happens to the amount of…

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Q: An induced emf appears in any coil in which the current is constant. O True False

A: According to guideline we need to solve only first Question . An induced emf appears in any coil in…

Q: Two coils are placed side by side. An emf of 0.8 V is observed in one coil when the current is…

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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.