Ex. 55 : When a voltage of 200 volt is applied across an inductance coil a current of 20 mA passes through it. Calculate the inductive reactance of the coil.

Q: A neon sign transformer has a 360W AC output with an rms voltage of 17 kV when connected to a normal…

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Q: An RL circuit consist of a resistance of 38 Ohms and source potential of 15 V. At t = 0 the switch…

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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: An emf of 86.5 mV is induced in the windings of a coil when the current in a nearby coil is…

A: The emf induced in the windings of a coil is given by Where e = emf induced, M = Mutual inductance…

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: 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: 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: Three inductors are connected in parallel in an electric circuit. If the inductance of the first…

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Q: Ex. 7: When 100V D.C. is applied across a coil, a current of 1A flows through it. When 100 V A.C. of…

A: We need to compute-Resistance (R)=?Impedance (Z)=?Self Inductance (L)=?The data given as-Applied emf…

Q: Ex. 65 : When a 100 volt. D.C. is applied across a coil, a current of 1 amp flows through it. When a…

A: To find-(1) Resistance of coil (2) Inductance of coilGiven-E=D.C. voltage=100 VI=1 AErms=100 VF=50…

Q: When a 100 volt. D.C. is applied across a coil, a current of 1 amp flows through it. When a 100…

A: When 100 volt DC is applied 1 amp flows through it Therefore Resistance  = 100/ 1 = 100 ohm…

Q: Current in a circuit falls from 5.0 A to 0.0 A in 0.1 s. If an average emf of

A: Given: The initial current is 5.0 A.           The final current is 0.0 A.            The time is…

Q: A coil of inductance 0.5H and resistance 100n is connected to a 240V,50HZ ac supply. a) What is the…

A: Given value--- inductance = 0.5 H. resistance = 100 ohm. Voltage = 240 V  frequency = 50 Hz. We…

Q: What is the self-inductance of a coil whose reactance is 10 Ω at 60 Hz?

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Q: 103. An inductor is connected to a 20.0-Hz power supply that produces a 50.0-V rms voltage. What…

A: Given: Frequency of power supply, f = 20 Hz RMS voltage, Vrms = 50 V Required maximum current, Imax…

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: In a series resonant circuit, the inductance coil is of 0.2 H and the resistance coil is of 50 Q.…

A: Concept: Resonant circuits are the Circuits in which the inductive reactance equals the capacitive…

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:Induced emf, E = 16VRate of change of current, didt = 42 A/sAsked:Self inductance of the coil,…

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: An inductor has an inductance of 0.080 H. The voltage across this inductor is 55 V and has a…

A: Given The inductance of the inductor is L = 0.080 H. The voltage across the inductor is V = 55 V.…

Q: In the circuit, the capacitor is fully charged when switch S is closed. Calculate the time needed…

A: Given data,

Q: EMF of 0.218V is induced in a coil when the current in a second coil is changing at a rate of…

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Q: A coil has a DC resistance of 78 Ω and an impedance of 160 Ω at a frequency of 3 kHz. Neglect the…

A: Given R=78  ΩZ=160  Ωf =3000 HzZ =R2+(XL)21602=782+(XL)2 XL=139.699

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

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

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Q: What relationship exists between a coil's inductance value and the amount of emf or voltage it…

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Q: Two resistors of resistance R1and R2 are placed in series across a battery with voltage V, such that…

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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: Say we have an inductor with an inductance of 2.5 H.  How fast does the current through it change…

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Q: n sign transformer has a 520W520W AC output with an rms voltage of 17 kVkV when connected to a…

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