A solenoidal inductor for a printed circuit board is being redesigned. To save weight, the number of turns is reduced by one-ninth, with the geometric dimensions kept the same. By how much must the current change if the energy stored in the inductor is to remain the same?

Q: The energy stored in a solenoid inductor is 28.4 J. The solenoid is .876 m long and has a radius of…

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Q: A toroidal solenoid has a cross-sectional area 2.1 cm² and a mean radius 6 cm consists of 740 turns…

A: A solenoid  is a type of electromagnet constructed by a helical coil of wire whose length is larger…

Q: Suppose that the number of turns of a cylindrical solenoid is halved while its cross- section area…

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Q: 5. A 200 µF capacitor is charged by a 100 V battery. When the capacitor is fully charged it is…

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Q: A 60 V emf is produced in a 12 H inductor. Calculate the rate at which the current is changing in…

A: Given data The emf of an inductor is ε = 60 V. The Inductance of the inductor is L = 12 H. From the…

Q: A circuit is constructed with four resistors, one inductor, one battery and a switch as shown. The…

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Q: 25. find the magnetic energy stored in inductor when it reaches the steady state ( time = infinity).…

A: Given, RL circuit

Q: The current through a 2.17-mH inductor varies with time according to the graph shown in the drawing.…

A: Given that current through 2.17mH inductor varies with time, shown in graph. Then We have to…

Q: A 3.7 mH inductor is initially connected to a 4.6 V battery at t = 0 through a 3.0 Ω resistor. Once…

A: Given: Inductance of an inductor (L) = 3.7 mH. Supply voltage (ε) = 4.6 V. Resistance (R) = 3.0 Ω.…

Q: 20) 13 R2 R1 An inductor with inductance L = 0.5 H and negligible resistance is connected to a…

A: Given : L = 0.5 H R1 = 10 Ω R2 = 20 Ω ε = 120 V

Q: A 24-V battery is connected in series with a resistor and an inductor, with R = 3.6 N and L = 4.6 H,…

A: Given data: Voltage V = 24 V Resistance R=3.6 Ω Inductance L = 4.6 H

Q: A 5.00 [cm] long solenoidal inductor has 50 turns and radius of 3.00 [cm]. If the current varies at…

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Q: The switch in the figure has been in position 1 for a long time. It is changed to position 2 at t =…

A: a)Charge on the circuit will be,

Q: 24-V battery is connected in series with a resistor and an inductor, with R = 3.8 Ω and L = 2.4 H,…

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Q: Inductor 1 stores the same amount of energy as inductor 2, although its inductance is only half the…

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Q: Calculate the self-inductance of a 44.0 cm long, 8.0 cm diameter solenoid having 850 loops. Submit…

A: Length (L) = 44 cm = 0.44 m Diameter of solenoid = 8 cm = 0.08 m Number of loops (N) = 850

Q: A 30-cm-long cylindrical solenoid with a radius of 5.0 cm consists of 500 turns wrapped around its…

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Q: A 24-V battery is connected in series with a resistor and an inductor, with R = 5.8 N and L = 4.4 H,…

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Q: A solenoid with 515 turns has a length of 5.50 cm and a cross-sectional area of 2.60 ✕ 10−9 m2. Find…

A: (a) The formula to calculate the inductance (L) is as follows: L=μ0N2Ad Thus, the inductance is,…

Q: Which of the following statements is TRUE when the magnet is dropped inside the solenoid? A. The…

A: When the magnet is dropped inside a solenoid, magnetic flux increases through the solenoid. It keeps…

Q: A 5.00 [cm] long solenoidal inductor has 50 turns and radius of 3.00 [cm]. If the current varies at…

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Q: When the current through a large inductor is interrupted with a switch, an arc appears across the…

A: In an inductor an induced emf is produced when current flows through it due to mutual inductance.

Q: current through a 10-mH inductor increases from zero to 2 A, how much energy is stored in the…

A: Given  Self inductance L = 10 mH  = 10 ×10-3 H  Current I = 2 A

Q: A 27.0 mH inductor, an 6.00 Ω resistor, and a 6.00 V battery are connected in series. The switch is…

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Q: An 8.0 mH inductor and a 2.0 Ω resistor are wired in series to an ideal battery. A switch in the…

A: We know              the relation of current in LR circuit at a time t with the maximum current.…

Q: A 24-V battery is connected in series with a resistor and an inductor, with R = 2.6 N and L = 7.6 H,…

A: Given: resistance in the circuit, R = 2.6 Ω inductance in the circuit, L = 7.6 H EMF of the battery,…

Q: The energy stored in a solenoid inductor is 28.4 mJ. The solenoid has 425 turns, is .876 meters long…

A: Given: The energy stored in the solenoid inductor is 28.4 mJ. The number of turns is 425. The length…

Q: Consider the RL circuit below. All the resistors have size 6 k 2, the inductor has size 5 mH, and…

A: When the Resistance and Inductor are connected together in a circuit, the circuit is called the R-L…

Q: An inductor with L = 2.5 H is in a closed circuit with I= 0.45 A (see the diagram). When the switch…

A: Magnetic flux is given by ϕ=LI where L=InductanceI=Current

Q: If you triple the inductance of an inductor, by what factor will the amount of energy it can store…

A: The expression for the amount of energy stored in the inductor is given as U=12LI2 *Here L is the…

Q: Induce yourself. A 5.00 [cm] long solenoidal inductor has 50 turns and radius of 3.00 [cm]. If the…

A: Length of solenoid (L') = 5 cm = 0.05 m number of turns (N) = 50 radius (r) = 3 cm rate of change of…

Q: A 9.9-V battery, a 5.01-0 resistor, and a 9.1-H inductor are connected in series. After the current…

A: The solution is given below

Q: When the current in a solenoid uniformly increases from 3.0 A to 8.0 A in a time 0.25 s, the induced…

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Q: A solenoid (made as a long coil) is a type of electromagnet, the purpose of which is to generate a…

A: SOlution: Given that n = 100 L = 5 cm = 0.05m A = 0.3 cm2 = 0.3x10-4 m2

Q: You are working as an electrical technician. One day, out in the field, you need an inductor but…

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Q: 4. An inductor has an inductance of 0.16 mH. Calculate the number of turns per unit length of this…

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Q: Where a 44 V battery is connected to three resistors and an inductor with values R1 = 96 Ω, R2 = 24…

A: Current through the R3 will be 0.324 ampere.

Q: A 24.0-V battery is connected in series with a resistor and an inductor, with R = 9.20N and L = 9.20…

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Q: Rank the following inductors in order of the potential difference Vab , from most positive to most…

A: Introduction: The potential difference of an inductor is directly proportional to the rate of change…

Q: An LC circuit like the one in the figure below contains an 60.0 mH inductor and a 20.0 µF capacitor…

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Q: I need to find the current through R2 on part c. Thank you!

A: Let the current through an inductor just after the switch is open is denoted by IL. This current is…

Q: A solenoid with 455 turns has a length of 8.00 cm and a cross-sectional area of 2.70 ✕ 10−9 m2. Find…

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Q: A 5 H inductor carries a current of 2 amps. How can a self-induced EMF of 50 volts be made to appear…

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Electromagnets

The word "electromagnet" is composed of two words, ‘electro’ and ‘magnet’. It is a type of magnet in which an electric current helps in the generation of a magnetic field. Electromagnets usually consist of two major parts, wire and a coil around which the wire is wound. This is called a solenoid. When an electric current is allowed to pass through the coiled wire, the electric current produces a magnetic field. This magnetic field is present only when current is passing through the wire.