Problem 19: A 4600-pF capacitor is charged to 95 V and then quickly connected to an inductor with 83-mH inductance. Part (a) Find the maximum energy, in joules, stored in the magnetic field of the inductor. Umax = ______ Part (b) Find the peak value of the current, in amperes. Imax = ______ Part (c) Find the circuit’s oscillation frequency, in hertz. f = ______

Q: The battery terminal voltage in the figure below is E = 6.60 V and the current I reaches half its…

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Q: A V = 47.0 V power supply fully charges a capacitor with capacitance C = 1.37 µF. The capacitor is…

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Q: A 20.0 V emf is applied to a coil with an inductance of 40.0 mH and a resistance of 0.500 Ω. a)…

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Q: the battery long after the switch has been closed A 1,8 MF Capacitor is charges to 55 V by abort…

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Q: Starting with emf2 = -M  ΔI1/ Δt , show that the units of inductance are (V . s)/A = Ω.s .

A: Given: Starting with emf2 = -M  ΔI1/ Δt , show that the units of inductance are (V . s)/A = Ω.s

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Q: a 12.0 V ideal battery, a 20.0  resistor, and an inductor are connected by a switch at time t = 0.…

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Q: In the L-C circuit in the figure, the ammeter reads a maximum cur­rent of I = 5.19 mA. The…

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Q: In the circuit shown in Fig. , switch S1 has beenclosed for a long enough time so that the current…

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Q: Activity: If a 500-V dc power supply is used to charge a 25-µF capacitor. After the capacitor is…

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Q: A large superconducting magnet, used for magnetic resonance imaging, has a 50.0 H inductance. If you…

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A: We know that,The rate of change of current,didt=6.00 A/sInductance, L=190.0HWe know that,Inductance…

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A: Flux developed in secondary Φ = 0.28 Wb Mutual inductance M = 400 mH = 0.400 H Current reduces by 40…

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A: No of turns n = 514 radius R = 8.20 mm Length L0 = 15.2 cm

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Electromagnets

The word "electromagnet" is composed of two words, ‘electro’ and ‘magnet’. It is a type of magnet in which an electric current helps in the generation of a magnetic field. Electromagnets usually consist of two major parts, wire and a coil around which the wire is wound. This is called a solenoid. When an electric current is allowed to pass through the coiled wire, the electric current produces a magnetic field. This magnetic field is present only when current is passing through the wire.