An emf of 0.70 V is induced across a coil when the current through it changes uniformly from 0.45 to 0.55 A in 0.40 s. What is the self-inductance of the coil (in H)?

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

A:

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

A:

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

A:

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

A:

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…

A:

Q: Show that the two expressions for inductance given by have the same units.

A: Given:  Inductance

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 50 mH. What is the emf induced when the current in the coil…

A:

Q: en the current in one coil changes at a rate of 7.0 A/s, an emf of -9.5 x 10-3 v is induced in a…

A:

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

A:

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

A:

Q: A lab tech observes that the current in a coil of conducting wire goes from i, At = 0.200 s.…

A: By general definition the voltage in in an inductor is defined as E = L di/dt  .L = Inductance di =…

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: In a coil of resistance 10 N, the induced current developed by changing magnetic flux through it, is…

A: As from the given graph we will find the charge q is area under the graph q=12×0.1×4q=0.2 C

Q: When the current through an inductor is decreasing at a constant rate of 0.5A/s, the magnitude of…

A:

Q: Two coils are placed near each other and they have a mutual inductance of 887.4 mH. If the current…

A:

Q: A 750-turn solenoid, 23 cm long, has a diameter of 2.7 cm . A 11-turn coil is wound tightly around…

A: Consider the number of turns of the solenoid be N, the radius of the solenoid be r, the length of…

Q: A 750-turn solenoid, 26 cm long, has a diameter of 2.5 cm. A 16-turn coil is wound tightly around…

A:

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…

A:

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

A:

Q: A coil with a self-inductance of 6.0 H is connected to a dc battery through a switch. As šooh as the…

A:

Q: A 2.00-H indductor carries a steady current of 0.500A. When the switch in the circuit is opened,the…

A: L = 2.00H Steady Current (Ii) = 0.500 Amp time = 10.0 ms

Q: A 460-loop circular armature coil with a diameter of 7.0 cm rotates at 170 rev/s in a uniform…

A: The equation for the rms output voltage of an electric generator is given by

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…

A:

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

A:

Q: What is the magnetic field due to an inductor of length 10 cm that has 300 turns if 0.25 A of…

A: B = magnetic field due a inductor.  B= uo n i Where n = number of turns  i = current L= self…

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: 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: coil rated 600 Watts, 330 Volts, 60 Hz has a resistance of 20 Ω. What is the inductance of the coil…

A: Given: The rated power and voltage is 600 W and 330 V. The resistance of the circuit is 20 Ohm. The…

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

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: 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.…

A:

Q: A capacitor in an LC oscillator has a maximum potential difference of 24.0 V and maximum energy of…

A: Given : Vmax = 24 V Umax = 184 uJ = 184 x 10-6 J V = 12 V

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 magnetic flux passing perpendicular to the plane of the coil directed into the paper is varying…

A:

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

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.