Initially, an inductor with no resistance carries a constant current. Then the current is brought to a new constant value twice as large. After this change, when the current is constant at its higher value, what has happened to the emf in the inductor? It is larger than before the change by a factor of 4. It is larger by a factor of 2.     It has the same nonzero value. It continues to be zero. It has decreased

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A: In R-L circuit, The potential difference of the battery is V = 12 V. The resistance of the resistor…

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Q: The battery provides 12.0 V of voltage. The inductor has inductance L, and the resistor has…

A: Here given the circuit with a battery 12 volt. There be a inductor and a resistance of 150 ohm.At…

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A: Current at time t = 0 is maximum in the circuit when the switch is just closed.The expression for…

Q: The voltage across a 200 mH inductor is given by v(t) = 3t2 + 2t +4 V for t > 0. Determine the…

A: Inductance, I = 200mH Voltage v(t)=(3t2 + 2t +4) V  i(0) = 1A

Q: e current in a 20.0-mH inductor changes with time as i= 3.002? - 8.00t, where i is in amperes and t…

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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: S 13 R2 R L An inductor with indu ctance L = 0.4 H and negligible resistance is connected to a…

A: R1 = 20 R2 = 30 L = 0.4 H V = 180 V To find = Value of t for which  has half of the final value…

Q: An electromagnet can be modeled as an inductor in series with a resistor. Consider a large…

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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: The figure below shows a circuit consisting of a 18.0 V battery in series with an inductor with…

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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: The circuit below contains an inductor (L = 3 H) with an internal resistance R3 = 60 ohm. The other…

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Q: A battery is connected in series with a 5Ω resistor and an inductor, as shown in the figure. The…

A: Hello. Since your question has multiple sub-parts, we will solve first three sub-parts for you. If…

Q: An inductor of L = 7.75 H with negligible resistance is placed in series with a 8 = 12.1 V battery,…

A: In the seriesL and RV=VR+VLV=IR+LdIdtI(t)=VR1-e-RtLt=0,I0=VR(1-e)I0=0given that,v=12.1 vR=3 ΩL=7.75…

Q: ... A V = 86-V source is connected in series with an R = 1.8-kΩ resistor and an L = 28-H inductor…

A: As given, Voltage, V=86 V Resistor, R=1.8 kΩ=1.8×103 Ω Inductor, L=28 H   At time t=0, the current…

Q: A 24-V battery is connected in series with a resistor and an inductor, with R = 8.8 N and L = 2.0 H,…

A: Given, V = 24 V R = 8.8 ohms L = 2 H   The expression for current in Rl circuit is I=εR(1-e-tL)

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Q: , Problem 7: A 1.4 H inductor in an RL circuit (with resistance 2.25 Ω) is initially fully charged.…

A: (a) The initial energy in the inductor will be:

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 1.65 H inductor in an RL circuit (with resistance 1.8 Ω) is initially carrying a current of 4.95…

A: Given that:- Inductance of inductor=L=1.65H

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Q: An inductor L=47 H is connected in series with a resistor R=25 ohms and a voltage source V=12 V and…

A: Inductance,L=47 H Resistance, R=25 ohm Voltage,v=12 volt

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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: 14.0-mH inductor is connected to a North American electrical outlet (ΔVrms = 120 V, f = 60.0 Hz).…

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Q: 20) R22 13 R, L. %3D to a battery, a switch S, and two resistors, R, = 100 and R2 = 20 N as seen in…

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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: Initially, an inductor with no resistance carries a constant current. Then the current is brought to…

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

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Q: The current follows in a charging inductor I(t) at time t seconds is given by: i(t) = 1,(1– e) mA…

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Q: An inductor and a resistor are connected in series to a battery as shown in the figure below, where…

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

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Q: The current in a 20.0-mH inductor changes with time as i = 4.00t2 - 7.00t, where i is in amperes and…

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Q: An RL circuit consists of a switch, an emf source E, a 3.0 ka resistor, and a 1.0 H inductor. If the…

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Q: The current in a 20.0-mH inductor changes with time as i = 3.00t² - 5.00t, where i is in amperes and…

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Q: Initially two capacitors each of capacitors C have charges as shown and the inductor L has zero…

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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…

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Q: An inductor (L = 0.39 H) and two resistors (R, = R, = 5.5 N) are connected to a battery with an emf…

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Q: The 4.00 A current through a 1.30 H inductor is dissipated by a 2.00 Ω resistor in a circuit like…

A: Since there are multiple sub parts posted, we will answer the first three sub parts. a) The equation…

Q: Consider a 22.5 mH inductor that has a resistance of 4.1 Ω.  Part (a)  What is the time constant, τ,…

A: The formula of growth of current in an LR circuit connected to a battery of E volt emf is given by,…

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.