Two coils have a mutual inductance of 1.93x10-4 H. The current in the first coil increases at a uniform rate of 665 A/s. If the resistance of the second coil is 10 ohms, what is the magnitude of the induced current in mA in the Second coil?

Q: An emf of 0.60 V is induced across a coil when the current through it changes uniformly from 0.30 to…

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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: At the instant a current of 0.80 A is flowing through a coil of wire, the energy stored in its…

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Q: Two coils are placed near each other and they have a mutual inductance of 879.1 mH. If the current…

A: mutual inductance(M)=879.1 mH=879.1×10-3H  current i(t)=0.5e-1,625.3t to find: induced emf at…

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

A: The expression for the EMF of a coil, ε=-dϕdtThe magnetic flux of the coil isϕ=MI

Q: The self-inductance of a coil is zero if there is no current passing through the windings. True or…

A: Self inductance of a coil

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 flux through each turn of a 100-turn coil is (ť – 2t) mWb, where t is in seconds. The induced…

A: Given, number of turns, N=100 flux, φ=t3-2t mWb induced emf, ε time, t = 2 s So, the induced emf can…

Q: An emf of 5.7 x 10 -3 V is induced in a coil while the current in a nearby coil is decreasing at a…

A: Using the relation between induced emf and iductance,

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: What is the inductance of a coil in which the average emf induced is 21V when the current in the…

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Q: A coil with a self-inductance of 2.0 H carries a current that varies with time according to I(t) =…

A: The expression for find induced emf in the coil is ε=-LdIdt

Q: The magnetic flux through a coil of wire containing two loops changes at a constant rate from –58 Wb…

A: According to faraday's law of Electromagnetic induction, whenever flux passing through a coil…

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

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Q: A coil has an inductance of 3.00 mH, and the current through it changes from 0.200 A to 1.50 A in a…

A: When magnetic flux linked with a coil changes then emf get induced in the coil according to Lenz's…

Q: A coil has an Inductance of 50μH. What voltage is induced across the coil when the rate of change of…

A: Given, Inductance of coil, L = 50 μH rate of change of current, dIdt = 10000 As

Q: An emf of 0.70 V is induced across a coil when the current through it changes uniformly from 0.45 to…

A: Given data:  Emf (e) = 0.70 V Initial current = 0.45 A Final current = 0.55 A Time (t) = 0.40 s…

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: The magnetic field between the poles of the electromagnet is uniform at any time, but its magnitude…

A: Solution:-

Q: The inductance of a closely wound coil is such that an emf of 3.00 mV is induced when the current…

A: The equation for the inductance of the coil can be obtained as Substituting the values gives the…

Q: A coil has 3.45 Ω resistance and 450 mH inductance. If the current is 3.92 A and is increasing at a…

A: The equation for the potential difference across the coil can be given by the equation

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: As current stabilizes in the inductor at 10A over 0.1 seconds, how much is the induced emf in the…

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Q: If two coils placed next to one another have a mutual inductance of 7.50 mH, what voltage (in V) is…

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Q: The inductance of a closely packed coil of 400 turns is 6.5 mH. Calculate the magnetic flux (per…

A: The coil with 400 turns can be considered as a solenoid. The expression for inductance of a solenoid…

Q: A coil has a self inductance of 10 Henry. If the current through the coil changes at a rate of 5…

A: Self inductance (L) =10 henry Current through coil changes at a rate of 5 Amps per second Emf will…

Q: A fixed 17.4-cm-diameter wire coil is perpendicular to a magnetic field 0.56 T pointing up. In 0.29…

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Q: Two coils have a mutual inductance of 2.34 x 10 H. The current in the first coil increases at a…

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Q: Two coils have a mutual inductance of 580 mH. One coil is supplied with a current given by I = 3t2 -…

A: Given Mutual Inductance = 580 mH = 0.58H I = 3t2 - 2t + 4

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 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: Find the energy stored in the magnetic field of an inductor having inductance 12.5 mH carrying the…

A: The expression for the stored energy is,

Q: A coil of conducting wire carries a current i. In a time interval of At = 0.480 s, the current goes…

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Q: A voltage of 0.35 V is induced across a coil when the current through it changes uniformly from 0.1…

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Q: The self-induced emf in a loop opposes     a. the net resistance in loop     b. the inductance…

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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 the instant a current of 0.90 A is flowing through a coil of wire, the energy stored in its…

A:

Q: The self-inductance of a coil of 500 turns is 0.25h. Y 60% of the flux of the last coil of its speed…

A: Given, No.of coil(N)=500 Self-inductance (L)=0.25h Current per second=100amp/sec

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.