How would you place two identical flat coils in contact so that they had the greatest mutual inductance? The least?

Q: A coil consisting of 800 turns, very closely spaced, has an inductance of 4mh and a current of…

A:

Q: The self-inductance of a solenoid increases under which of the following conditions?

A: When an electric current is passed through a solenoid, a coil of insulated wire wound on a…

Q: A coil is wound as a transformer of rectangular cross-section. If all the linear dimensions of the…

A: Self inductance L= μ0 N2 A / l = μ0 n2 lA

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

A:

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: Would the self-inductance of a 1.0 m long, tightly wound solenoid differ from the self-inductance…

A:

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: Two identical induction coils, each of inductance L joined in series are placed very close to each…

A: When the two coils are joined in series such that, the winding of one is opposite to the other, then…

Q: How can we calculate the self inductance of a solenoid?

A: Solenoid is a device made by a coil of wire.

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: A coil has an inductance of 0.81 mH and a resis connected to a 21 V battery. After how many tim…

A: GivenL=0.81 mHR=0.65 ohmV=21 V

Q: How does the self-inductance per unit length near the center of a solenoid (away from the ends)…

A: The expression for the self inductance , L=μN2Al

Q: The mutual inductance between two unity coupled coils of 9 H and 4 H will be ?

A: Given two coils having, L1 = 9 H L2 = 4 H Unity coupled, K =1

Q: Can a transformer be operated by a DC waveform at its input? What would be the secondary voltage of…

A: Can a transformer be operated by a DC waveform at its input? What would be the secondary voltage of…

Q: What capacitance do you need to produce a resonant frequency of 1.00 GHz, when using an 8.00 nH…

A:

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: Is more energy stored in an inductor by doubling the inductance or by doubling thecurrent?

A: To determine: Whether the energy stored is more or not by doubling the inductance or the current.

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

A:

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: Can there be an induced emf in a circuit at an instant when the magnetic flux through the circuit is…

A: Magnetic flux

Q: Why can we not use a transformer on a DC circuit?

A: Transformers work on the principle of mutual induction.

Q: The flux linkage through a certain coil of 0.75 ohm resistance would be 26 mWb if there were a…

A: a) The inductance of the coil is given by,

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

A:

Q: Can there be an induced emf in a circuit at an instant when the magnetic flux through the circuit is…

A: Faraday's Law gives us the concept of the induced emf being equal to the rate of change of magnetic…

Q: How would you shape a given length of wire to give it the greatest self-inductance? The least?

A: The expression for the self inductance is,

Q: . How would you arrange two flat circular coils so that theirmutual inductance was (a) greatest, (b)…

A: The mutual inductance between two circular coils can be given as, Here, ϕ21, μ0, N1, N2, A, l, and…

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: How does a transformer keep the circuits oscillations going? And how can the frequency in a coil…

A: Given : To explain how does a transformer keep the circuits oscillations going? And how can the…

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

A:

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 mutual inductance between the primary and secondary of a transformer is 0.3H. Compute the…

A: Given : Mutual inductance between the primary and secondary of a transformer = 0.3 H…

Q: The current in a circuit containing a coil, a resistor, and a battery has reached a constant value.…

A: (a) In the L-R circuit, as the current increases in the coil, it opposes the change but after a…

Q: A pair of adjacent coils has a mutual inductance of 1.5 H. If the current in one coil changes from 0…

A:

Q: A single loop is made around the center of a solenoid with a length of 20 m and a radius of 5m. How…

A: Given  Length of solenoid, h = 20 m  Radius of solenoid,R = 5 m  Mutual inductance, L = 1 Henry  No…

Q: The inductance of a closely packed coil of 400 turns is 8.0 mH. Calculate the magnetic flux through…

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

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.