Two coils close to each other have a mutual inductance of 32 mH. If the current in one coildecays according toI=I0e−αt, whereI0= 5.0Aandα= 2.0×103Hz, what is the emfinduced in the second coil (a) immediately after the current starts to decay? (b) Att= 10−3s?

Q: 80. If the current through a 0.03H inductor increased from 2A to 4A in 1.5ms, what is the magnitude…

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Q: A 0.7-H inductor is connected in series with a 9-ohm resistor. If the connection is energized from…

A: The inductance of the inductor L=0.7 H The resistance in the circuit R=9 Ω The time t=2.75…

Q: 8) A stationary conducting loop of radius a is placed in a time-varying magnetic field B = 2B, sin…

A: Induced EMF is given by: EMF = -N*d(phi)/dt phi = Magnetic flux through loop = B*A w = angular…

Q: A solenoid of length 8 x 10²m and cross sectional area 5 x 10-5 m²2 contains 6500 turns per meter…

A: Length , l = 8 x 10-2 m Area , A = 5 x 10-5 m2  number of turns , n = 6500  To find = self…

Q: Supposed that the current in coil 1 increases from 0 to 20A in 10 microseconds inducing an average…

A: Initial current = 0 A Final current = 20 ATime taken = 10 micro seconds Average induced emf = - 20 V…

Q: 16. Suppose Consider the circuit below. Switch S is closed at t = 0. What is the current through the…

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Q: At what velocity (in revolutions per minute) will the peak voltage of a generator be 490 V, if its…

A: Peak voltage , εmax = 490 V Number of turns , N = 490  Diameter , D = 8 cm  Radius , R = 4 cm = 0.04…

Q: 9. The following are factors involved in the induced emf of a coil of wire EXCEPT A. The induced emf…

A: The induced EMF is defined as the generation of a voltage or potential difference in a coil due to a…

Q: A 12H inductors carries a current of 2A. At what rate must the current be changed to produce a 60V…

A: The equation for the rate at which the current has to be changed can be obtained as

Q: 4. A 100KVA, 4000V/200V, 50HZ single-phase transformer has 100 secondary turns. Determine: i. The…

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Q: 8. The current I(t) in an electric circuit with inductance L and resistance R is given by dI L + RI…

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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: 9. In an inductor, the current (I in Ampere) varies with time (t in seconds) as: (I = 5 + 16t). If…

A: Write the given values with suitable variables. V=10 mV=10×10-3 VI=5+16t A Here, v denotes the…

Q: 4. An inductor of inductance 0.45 H has a current in the direction shown of 2.0 Amperes. This…

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Q: 8) The resistance of a coil is 54 0. When the frequency is 80 Hz, the voltage on the coil is 75,3°…

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Q: 6. A constant inductance of one henry and a variable resistance R are connected in series with a…

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Q: generate

A: If the strength of the magnetic field is also increased then the wire moves through a stronger…

Q: 1.4 Find the induced emf in the coil once coil is rotated about 0.3 seconds? A. -6.67 V B.…

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Q: 8) The resistanoe of a coil is 540. When the frequency is 80 Hz, the voltage on the coil is 75,3…

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Q: 8 A generator consists of 10.0 turns of wire, and each turn has an area of 0.095 m*2. If a maximum…

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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: 2. What is the self-inductance of a coil with 450 turns if a steady current of 4.0 A generates a…

A:

Q: 8. A coil with an inductance of 1.5 H and a resistance of 10 Ais suddenly connected to an ideal…

A: Given data The inductance of the coil is L = 1.5 H. The resistance of the coil is R = 10 Ω. The emf…

Q: 28. Two inductors, L, = 600 mH and L2 = 400 mH, are connected in parallel, what is the equivalent…

A: We’ll answer the second question since the exact one wasn’t specified and first question is…

Q: 14. In the figure, a bar magnet moves towards the solenoid. The direction of the induced current…

A: By Using lenzs law  The direction of induced current from through resistor is from a to b. Thus…

Q: 85. The emf induced in an 80-mH inductor is -0.72 V when the current through th inductor increases…

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Q: 6.43 The current in an 80-mH inductor increases from 0 to 60 mA. How much energy is stored in the…

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Q: Mutually induced emf is induced in secondary of the transformer by Flemings left hand rule Select…

A: When two coils are placed very close to each other and the current is passed through one coil, a…

Q: Upon which one or more of the following does the magnetic energy of a coil that carries a current…

A: The strength or intensity of a coils magnetic field depends on the following factors. The number of…

Q: A 0.230 m radius, 480 turn coil is rotated one-fourth of a revolution in 4.17 ms, originally having…

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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: 8) The resistance of a coil is 52 0. When the frequency is 80 Hz, the voltage on the coil is 72,3…

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Q: A 9.00 - V battery is connected to a coil which has a self-inductance of 125 mH and a resistance of…

A: The amount of energy stored in the coil is E=12LI2=12125×10-3 H0.500 A2=0.015625 J

Q: A solenoid with 465 turns has a length of 7.50 cm and a cross sectional area of 2.70×10^-9 m^2. Find…

A: Number of turns (N) = 465Length (L) = 7.50 cm = 0.075 m Area of cross section (A) = 2.7×10-9…

Q: A solenoid with a diameter of 8.67cm has 92 turns. The solenoid is placed in a uniform magnetic…

A: The given information is as follows:  The diameter of the coil, d = 8.67 cm  Thus we get the…

Q: The field outside the coils of the solenoid  is nearly zero. Why?

A: Solenoids are long straight coil of wires used to generate nearly uniform magnetic fields similar to…

Q: 100. The inductance of a closely packed coil of 400 turns is 8.0 mH. Calculate the magnetic flux…

A: We’ll answer the first question since the exact one wasn’t specified. Please submit a new question…

Q: 21. Determine the inductance of a solenoid with 660 turns in a length of 34 cm. The circular cross…

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Q: A solenoid has a cross sectional area of 0.5 m2 and is 3 m long. If the inductance is 7 mH,…

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Q: 1 = 1200 turns there is a small coil with a diameter of d = 1 cm. The length of this small |= 2 cm…

A: Given values:- Diameter of the bigger coil,(D)=2 cm=0.02 m ----(1) Length of the solenoid,(L)=20…

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.