An emf of 0.60 V is induced across a coil when the current through it changes uniformly from 0.30 to 0.85 A in 0.90 s. What is the self-inductance of the coil H.

Q: An emf of 0.80 Vv is induced across a coil when the current through it changes uniformly from 0.30…

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Q: A solenoid with an inductance = 8.0*10^-3 H carries current of 1.0 A. The current in the solenoid…

A: Given, Inductance of solenoid L = 8 x 10-3 H Current I1 = 1A Current I2 = 0 A Time t = 0.1…

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: 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: 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: The current (I) takes 5 ms to reach 90% of its max value. The inductance (L) of the coil is equal to…

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Q: A coil having 50 turns and an outer and inner diameter of 3cm and 2 cm respectively swings from a…

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Q: A direct current of 25A creates a flux of 1.4 X 10-4 Wb in a coil of 500 turns.  What is the…

A: Given that, Current I = 25 A Flux ϕ=1.4×10-4 Wb Number of turns = 500

Q: An emf of 0.50 V is induced across a coil when the current through it changes uniformly from 0.20 A…

A: solution is given by

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

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Q: An AC generator has 80 rectangular loops on its armature. Each loop is 15 cm long and 9 cm wide. The…

A: The expression for the maximum output voltage,

Q: The self-inductance of a coil is 50 mH. What is the emf induced when the current in the coil…

A:

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 magnetic flux through a coil of wire containing 15 loops changes at a constant rate from 10Wb to…

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Q: A 450-loop circular armature coil with a diameter of 8.0 cm rotates at 12 rev/s in a uniform…

A: a. the rms voltage output of the generator is

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 600-turn solenoid is 0.55 m long and 4.2 cm in diameter. Inside the solenoid, a small (1.1 cm ×…

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Q: A coil is connected in series with a 10.0 k resistor.An ideal 50.0 V battery is applied across the…

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Q: The current in a coil drops from 4.2 A to 2.8 A in 0.51 s. If the average emf induced in the coil is…

A: Given: The initial current in the coil is 4.2 A. The final current in the coil is 2.8 A. The time…

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

A: ε=MdIdtM=εdIdt

Q: Two coils are at fixed locations. When coil 1 has no current and the current in coil 2 increases at…

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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: The current in a coil drops from 3.4 A to 2.4 A in 0.49 s. If the average emf induced in the coil is…

A:

Q: An emf of 121.5 mV is induced in the windings of a coil when the current in a nearby coil is…

A: The formula for the induced emf in term of mutual inductance is:

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: 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 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: 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: An induced emf of 2.0 V is measured across a coil of 50 closely wound turns while the current…

A: The self-inductance of the coil, L=εdI/dt

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: An emf of 0.40 V is induced across a coil when the current through it changes uniformly from 0.10 to…

A: Given data The emf induced in the coil is given as ε=0.40 V . The initial flow of current is Ii =…

Q: An emf of 9.7 × 10−3 V is induced in a coil while the current in a nearby coil is decreasing at a…

A: ε1=-MdI2dtM=-ε1dI2dt

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

A:

Q: The current through a coil as a function of time is represented by the equation I(t) = Ae-bt…

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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: An emf of 24.0 mV is induced in a 500-turn coil when the current is changing at a rate of 10.0 A/s.…

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Q: A coil has an inductance of 8.00 mH, and the current in it changes from 0.200 A to 1.50 A in a time…

A: Given,L=8.00mH∆I =1.50A-0.200A∆t =0.350s

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

A:

Q: What is the inductance of a coil in which the average emf induced is  20.0 mV when the current in…

A: E = 20mV  3.5 A to 7.7 A t = 0.33 sec L=?

Q: A circular coil has 250 turns and radius 1.50 cm. When a current of 5.00 A flows in the coil, the…

A: Given, Number of turns n=250 Radius R=1.50 cm Current I=5.00 A Magnetic flux density B=0.050 T

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.