#71. At fixed length h of the coil, find the the self-inductance L when N and cross-sectional area A is doubled? How it affects the magnitude of L? Note: The final answer should be in one of the options in the picture.

Q: 8) A stationary conducting loop of radius a is placed in a time-varying magnetic field B = 2B, sin…

A: Induced EMF is given by: EMF = -N*d(phi)/dt phi = Magnetic flux through loop = B*A w = angular…

Q: 1. The number of turns on the primary and secondary windings of a 1-0 transformer are 350 and 35…

A: Hello. Since you have posted multiple questions and not specified which question needs to be solved,…

Q: 101. At a given instant the current and self- emf in induced an elll inductor are directed as…

A: Given : induced emf, e = 17 V rate of change in current, didt =25 kA/sdidt =25000 A/s the direction…

Q: Figure 2 shows a circular, conducting loop that is connected to a 5.0-V battery and a switch S.…

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Q: Approximately how does the emf induced in the loop in 23.57(b) depend on the distance of the center…

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Q: State two factors on which the magnitude of induced emf in a coil depend.

A: induced emf in the coil depends on many factors,1) number of turns in the coil2) the magnetic flux…

Q: The maximum strength of the Earth’s magnetic field is about 7.0 x 10-5 T near the south magnetic…

A: Magnetic field = Frequency = f = 60 Hz Angular frequency = Area per turn = A = 0.016 m2 RMS…

Q: (I) Neon signs require 12 kV for their operation. To operatefrom a 240-V line, what must be the…

A: The ratio of secondary to primary turns of the transformer can be obtained as…

Q: How can we calculate the self inductance of a solenoid?

A: Solenoid is a device made by a coil of wire.

Q: When the 20.0 A current through an inductor is turned off in 1.50 ms, an 800 V emf is induced,…

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Q: half O A tectangular conducting loop has its left in a magnetic field directed into the page. S…

A: when we increase the magnetic field in the page so Loop pused itself on the right side because it…

Q: 4. An inductor of inductance 0.45 H has a current in the direction shown of 2.0 Amperes. This…

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Q: How does the self-inductance per unit length near the center of a solenoid (away from the ends)…

A: The expression for the self inductance , L=μN2Al

Q: 22. A simple RL circuit includes a 0.125-H inductor. If the circuit is to have a characteristic time…

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Q: if the angular speed v of the loop is doubled, then the frequency with which the induced current…

A: Scenario:  Loop's angular speed gets doubled & frequency at which current(induced) changes…

Q: Suppose there is a steady current in an inductor. If you attempt to reduce the current to zero…

A: The current voltage relationship for an inductor is given by the following equation. Here, L is the…

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: A generator has a 130-turn square coil, 6 cm on a side. Find the peak emf in this coil when it's…

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Q: Is more energy stored in an inductor by doubling the inductance or by doubling thecurrent?

A: To determine: Whether the energy stored is more or not by doubling the inductance or the current.

Q: 9. As a coil in an AC generator rotates in a magnetic field, it reaches the position shown in the…

A: Since you have asked multiple question, we will solve the first question for you. If you want any…

Q: 7. The figure shows a uniform magnetic field that is normal to the plane of a conducting loop with…

A: Let us consider a uniform magnetic field (B) that is normal to the plane of a conducting loop with…

Q: Problem begins here: A piece of electrical component inside a gaming laptop uses a source of…

A: GIVEN: Voltage=V=4Sin4t,Resistance=R=2 ohms, Inductance=I=1 H,  Time=t=2 sec, Io=0.6 A. To Find: The…

Q: How would you position a flat loop of wire in a changing magnetic field so that there is no induced…

A: The formula to find the induced emf in the loop is  ε=-NddtB.A=-NddtBAcosθN is the number of loops B…

Q: Two coils are placed close together in a physics lab to demonstrate Faraday's law of induction. A…

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Q: In a generator, what are the carbon brushes used for?

A: Use of carbon brushes in a generator

Q: Can there be an induced emf in a circuit at an instant when the magnetic flux through the circuit is…

A: Faraday's Law gives us the concept of the induced emf being equal to the rate of change of magnetic…

Q: . How would you arrange two flat circular coils so that theirmutual inductance was (a) greatest, (b)…

A: The mutual inductance between two circular coils can be given as, Here, ϕ21, μ0, N1, N2, A, l, and…

Q: Two coils close to each other have a mutual inductance of 32 mH. If the current in one coildecays…

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Q: 85. The emf induced in an 80-mH inductor is -0.72 V when the current through th inductor increases…

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Q: Would you use a large inductance or a large capacitance in series with a system to filter out low…

A: At a lower frequency, the capacitor has a large capacitive reactance because the capacitive…

Q: 14.9 Check Your Understanding For the circuit of in Figure 14.12(b), show that when steady state is…

A: Energy stored in an Inductor in RL circuit:

Q: induced=-NAD, At В What will increase the Voltage produced by a moving magnet? OIncreasing the area…

A: The induced voltage is given by the expression : Vinduced = - N ×∆ϕB∆t where ϕB = magnetic flux =…

Q: 7.  The 4.50 A current through a 7.10 mH inductor is switched off in 9.50 ms. What is the emf…

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Q: Mutual inductance between an infinite current filament placed along y -axis and rectangular coil of…

A: Given Current in wire is I Height of coil is 1m Width of coil in 4m No of turns is 1200

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: (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: 1 = 1200 turns there is a small coil with a diameter of d = 1 cm. The length of this small |= 2 cm…

A: Given values:- Diameter of the bigger coil,(D)=2 cm=0.02 m ----(1) Length of the solenoid,(L)=20…

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.