Two coils are placed close together in a physics lab to demonstrate Faraday’s law of induction. A current of 5.00 A in one is switched off in 1.00 ms, inducing a 9.00 V emf in the other. What is their mutual inductance?

Q: Two long, parallel wires carry equal currents in opposite directions. The radius of each wire is a,…

A: To determine: The self-inductance of a length ‘l’ of pair of wires   Introduction: Let us consider…

Q: The current in a coil drops from 3.5 A to 2.0 A in 0.50 s. If the average emf induced in the coil is…

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Q: 6.0 μsμs after the switch of (Figure 1) is moved from 1 to 2, the magnetic energy stored in the…

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Q: An induced EMF of 16 V exists in a coil when the current in the coil changes at a rate of 42 A/s.…

A: Given data: Induced EMF is, e=16 V. Rate of change of current is, dIdt=42 A/s.

Q: A coil with loops of area 0.0120 m^2 rotates at 60.0 Hz through a B field of 0. 125 T. How many…

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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 closely wound rectangular coil of 100 turns has a dimension of 12.0cm x 25.0cm. In time t=0.0800 s…

A: Given, Number of turns of rectngular coil, N = 100dimension, 12.0 cm ×25.0 cmtime, t = 0.080 sit…

Q: A simple AC generator consists of 20 coils of wire with an area of 1000cm2 and placed in a region…

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Q: A toroidal coil has a mean radius of 16 cm and a cross-sectional area of 0.25 cm2 ; it is wound…

A: Given Data: The radius of a coil is, R=16 cm The cross-sectional area of a coil is, A=0.25 cm2 The…

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: The self inductance of the coil in the electric motor of the Prius is 200 mH. When the car starts…

A: The expression for Emf

Q: At t = 0, an emf of 500 V is applied to a coil that has an inductance of 0.800 H and a resistance of…

A: Values given in the question are as follow; ε=500 VR=30 ΩL=0.8 H Maximum current; Io=εRIo=500…

Q: Which of the following statements can describe the process of the law of induction? A. Increase in…

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Q: A wire loop of radius 0.33 m lies so that an external magnetic field of magnitude 0.35 T is…

A: Radius of loop (r) = 0.33 m Initial magnetic field (B) = 0.35 T Final magnetic field (B') = -0.16 T…

Q: At a certain instant the current flowing through a 5.0-H inductor is 3.0 A. If the energy in the…

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Q: Since inductors can be used as energy storage elements, how much inductance is needed to power up a…

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Q: A transformer consists of two coils of wire wound on a common toroidal iron core. The mutual…

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Q: Two single-turn coils are magnetically coupled with a mutual inductance of 3.06 x 105 H. If a mutual…

A: number of turns in each coil = 1 Mutual inductance = 3.06×10-5 H new mutual inductance = 8.89 mH

Q: The bolt of lightning depicted in the figure passes 200 m from a 90 turn coil oriented as shown. If…

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Q: A 10.7-V battery, a 4.92-2 resistor, and a 10.1-H inductor are connected in series. After the…

A: V = 10.7 Volts R = 4.92 ohm L = 10.1 H current = maximum

Q: A rectangular loop of wire has area A. It is placed perpendicular to a uniform magnetic field B and…

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Q: A 9.1-V battery, a 4.90-2 resistor, and a 10.5-H inductor are connected in series. After the current…

A: Recall when current has reached maximam value, the inductor offer zero resistance.

Q: what is the inductance of a coil wire that generates an instantaneous voltage of 1 v when the…

A: Given: Voltage V=1 V Rate of change of current dIdt=0.1 A/s

Q: The current in a coil drops from 3.8 A to 1.8 A in 0.51 s. If the average emf induced in the coil is…

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Q: Faraday's law of magnetic induction states that the voltage induced by a current running through a…

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

A: Given: The supply voltage is 9.9 V. The resistance of the circuit is 5.01 Ω. The inductance of the…

Q: 9. An inductor carries a current of 2.5 A, and the magnetic energy stored in the inductor is 0.0035…

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Q: A coil of wire with a resistance of 0.15 Ω has a self-inductance of 0.083 H. If a 5.0-V battery is…

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Q: if two coils placed next to one I know there have a mutual inductance of 3.00 MH, what voltage (in…

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Q: What is the CORRECT statement about Faraday's law of induction? a. The emf produced in a loop of…

A: Faraday law od induction says that emf produced is proportional to the rate of change(time…

Q: coil has 2.55-Ω resistance and 121-mH inductance. If the current is 3.00 A and is increasing at a…

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

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Q: An emf of 96.0 mV is induced in the windings of a coil when the current in a nearby coil is…

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Q: A coil has an inductance of 50 mH and a resistance of 0.24 Q. A 12V emf is applied across the coil.…

A: The RL circuit consists of the Resistance and Inductance connected in series. The voltage difference…

Q: A 25 cm long solenoid of 100 turns with area of 9 cm2 has current of 1.5 A changing at a rate of 2…

A: Length, d = 25 cm = 0.25 m  Turns, N = 100  Area, A = 9 cm2 Current, I = 1.5 A  di/dt = 2 A/s

Q: An e.m.f of 30 volts is induced in a coil of inductance 60 H, then the rate of change of current is…

A: Given data: The e.m.f. induced in the coil is, e=30 V The inductance of the inductor is, L= 60 H…

Q: At the instant a current of 0.20 A is flowing through a coil of wire, the energy stored in its…

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Q: The current in a coil decreases from 9.0 A to 5.5 A in 0.30 s. If the average emf induced in the…

A: Solution: given that current in a coil decreases from 9.0 A to 5.5 A in 0.30 s emf  = 25 mV

Q: At t = 0, an emf of 420 V is applied to a coil that has an inductance of 0.780 H and a resistance of…

A: Let the maximum current be io Given that Resistance (R)= 30 ohm Emf (E)= 420 v Inductance (L)= 0.780…

Q: A 10 ohm resistance wire and a 0.5 H coil are connected in series between the ends of a generator…

A: SOlution: Given that R = 10 Ohm L = 0.5 H V = 100sin40t

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.