1.    How does increasing the number of loops strengthen the magnitude of the induced EMF or electromotive force?

Q: 1. A magnetic circuit which has a total flux of 3 x 10-3 weber, drawing a current of 4 amperes in a…

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Q: At what velocity (in revolutions per minute) will the peak voltage of a generator be 490 V, if its…

A: Peak voltage , εpeak = 490 V Turns , N = 490  Diameter = 8 cm  Radius , R = 4 cm = 4 x 10-2 m…

Q: 1. ) The magnetic flux through a coil containing 10 loops changes from 20Wb to-20Wb in 0.03s. Find…

A: Given data: Number of loops, N=10 Initial flux, ϕi=20 Wb Final flux, ϕf=-20 Wb Time taken, dt=0.03…

Q: 5. A boost converter supplies 48V to a a 12ohm load from a 18V d.c. supply. The converter inductance…

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Q: Calculate the peak voltage of a generator that rotates its 1000-turn, 0.100 m diameter coil at 5000…

A: Given that the value of magnetic field and given the number of turns and diameter of coil and speed…

Q: 1. A simple AC generator consists of an N = 10 turn coil of area A = 1200 cm? which rotates at a…

A: The number of turns, N is 10. The area of the coil, A is 1200 cm2. The frequency, f is 60 Hz. The…

Q: 10. An outer metal ring surrounds an inner metal ring, as shown in the figure. The current in the…

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Q: At what velocity (in revolutions per minute) will the peak voltage of a generator be 490 V, if its…

A: Peak voltage , εmax = 490 V Number of turns , N = 490  Diameter , D = 8 cm  Radius , R = 4 cm = 0.04…

Q: 3. i) Define magnetic flux. i) State Faraday's induction law. iii) Using an example explain the…

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Q: 45. It is desired to construct a solenoid that will have a resistance of 5.00 N (at 20.0°C) and…

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Q: 5. In an electric circuit containing inductors, the largest induced voltage usually occurs is opened…

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Q: #71. At fixed length h of the coil, find the the self-inductance L when N and cross-sectional area A…

A: The self-inductance for a coil is given as: L=μ0N2Ah Where:        μ0 is the Permeability of Free…

Q: 1.    How does increasing the number of loops strengthen the magnitude of the induced ELECTROMOTIVE…

A: How does increasing the number of loops strengthen the magnitude of the induced ELECTROMOTIVE FORCE…

Q: 5. Find the magnitude and direction of the induced emf around the rectangular loop of sides a and b…

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Q: What factors that affect the magnitude of induced EMF? Explain.

A: ques:What factors that affect magnitude of induced EMF?

Q: What is the type of core material of the transformer?  a. Silicon steel b. Iron c. Copper d.…

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Q: 1. According to Lenz's law the direction of an induced current in a conductor will be that which…

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Q: 6. A constant inductance of one henry and a variable resistance R are connected in series with a…

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Q: 7. Can a constant current in a long straight wire induce a current in a nearby loop of wire? Why or…

A: induction induced due to change in magnetic flux through the linked wire    ∅=BACOSθ        ε=dϕ/dt…

Q: In what three ways can the strength of an induced current be increased?

A: Explanation: Induced Current(emf):       When the conducting loop or coil of wire is placed in a…

Q: Explain briefly in one(1) sentence why a back emf is “zero” during motor starting.

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Q: Calculate the peak voltage of a generator that rotates its 220–turn, 0.100 m diameter coil

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Q: 7. An inductance of 2 henry and a resistance of 10 ohms are connected in series with and…

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Q: 27.4 -mH inductor and 6.07 -Ω resistor, together with a switch, are connected in series to an ideal…

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Q: 2. A transformer has 30 turns in the primary coil and 120 secondary turns. a. If the primary voltage…

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Q: 9. (I) A step-up transformer increases 25 V to 120 V. What is the current in the secondary coil as…

A: This is a question regarding the change of current in a transformer. In a transformer, the voltage…

Q: On the freeway, there are also induction loops to detect cars’ speed. Concidering when you move a…

A: In the coil, the voltage is induced due to the relative motion between the coil and the magnet.

Q: 25-16. A transformer draws power P and delivers a current I, in its secondary coil. (a) What is the…

A: Power = potential×current P=V×I

Q: Calculate the peak voltage of a generator that rotates its 200-turn, 0.100 m diameter coil at 3600…

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Q: 1. When running at its operating speed, a 210-V dc motor with an armature whose resistance is 1.70 Q…

A: Voltage of the motor is V = 210 V Resistance of the armature is Ra = 1.70 ohms Required current is…

Q: 9. An ideal transformer has 60 turns on its primary coil an-

A: GivenNumber of turns in primary coil, Np=60 turnsNumber of turns in Srcondary coil, Ns=300…

Q: 8. When current is flowing through the solenoid wire the pole that will be created at location I is…

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Q: 3. What is the mutual inductance of two coils if an average electromotive force of 0.15 V was…

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Q: A wire loop moves translationally (no rotation) in a uniform magnetic field. Is there an emf induced…

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Q: Calculate the peak voltage of a generator that rotates its 100-turn, 0.100 m diameter coil at 3600…

A: Given data: Number of turns (N) = 100 Diameter (d) = 0.1 m Angular frequency = 3600 rpm Magnetic…

Q: Two nearby single loop, if we increase current h in loop 1, then we will see an induced current in…

A: The concept of faradays laws comes into use in order to determine the direction of the current…

Q: 8. The straight wire carries a current I. In which direction (clockwise or counterclockwise) does…

A: Straight Wire carries current I in the upward direction. The direction of magnetic field can be…

Q: 28b) When load current increases, the terminal voltage of DC shunt Generator is reduced. Justify

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Q: How does increasing the number of loops strengthen the magnitude of the induced EMF or electromotive…

A: The induced EMF is produced due to change in magnetic flux passing through any loop. The EMF will be…

Q: 3.The shunt field of a dc compound motor has a resistance of 200 ohms, a series field resistance of…

A: Given: The shunt field motor resistance is Rf=200 Ω. The series filed resistance is Rse=0.0018 Ω.…

Q: (33) Consider a magnet initially held stationary over a stationary loop as shown in Fig. 7(II). If…

A: Following the law of induction, an emf gets induced in a coil opposing the change in magnetic flux.…

Q: 2. A series wound DC motor with its rotor and field coils conr properties: The resistance of the…

A: GivenR1=10 ΩR2=5 ΩV=200 VI=10 A

Q: 2. The mutual inductance between two coils is 3.25 mH. A changing current in the primary coil…

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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.