... .. In a transformer the mutual inductance of two coils is 0.3 H where as the self inductance of primary and secondary are 0.28 H and 0.36 H respectively. Is the transformer loose or tight coupled. ICN D..

Q: Suppose that a rectangular toroid has 2000 windings and a self-inductance of 0.040 H. If h = 0.10 m,…

A: Solution:-Given thatNumber of windings (N)=2000self inductance (L)=0.04 Hh=0.1 mEnergy in magnetic…

Q: A long solenoid with a axa square cross section has n turns per length sits iwth a vertical central…

A: The objective of the question is to find the mutual inductance between a long solenoid and a flat…

Q: In a seasonant ciucuit induclance of the coil is 3 mH and sesonant frequency L000 kifz. kOhat és…

A: Given data L=3 mHf=1000 kHz Here L is the inductance. While f is the frequency of the circuit. Now…

Q: The switch S is closed at t = 0. Which statements about the following RL circuit are true? (Assume a…

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Q: How fast can the 150 A current through a 0.250 H inductor be shut off if the induced emf cannot…

A: Given:  Current, i = 150 A  inductance, L = 0.25 H  Voltage, V = 75 V

Q: Plz do it

A: Given that,The voltage of the secondary winding, Vs= 110 VoltPrimary Voltage, VP= 5.0 kVWe know the…

Q: How fast can the 145 A current through a 0.240 H inductor be shut off if the induced emf cannot…

A: Given: Current is I=145 A Inductance of inductor is L=0.240 H Induced emf is emf=73 V Find: Time…

Q: A coil is connected in series with a 14.4 kQ resistor. An ideal 64.8 V battery is applied across the…

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Q: The current passing through a 0.40-H coil increases from 2.0-A ti 10.0-A in 0.12 s. (a) Calculate…

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Q: A long solenoid with a axa square cross section has n turns per length nd sits iwth a verticla…

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Q: A 24300 / 300 volts, 62 hz, 147.6 KVA step down transformer has an induce emf of 3 volts per turn.…

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Q: half O A tectangular conducting loop has its left in a magnetic field directed into the page. S…

A: when we increase the magnetic field in the page so Loop pused itself on the right side because it…

Q: The co-efficient of mutual induction between primary and secondary coil is 2H. Calculate induced…

A: To find- Induced emf (e)=?Given-Coefficient of mutual  inductance (M)=2 HCurrent (dI)=4 ATime…

Q: For the Circuit Shown in the figure belong Avmax = 86.0V, W = 65-07 rad /s.. and L = 70.0m H.…

A: Given, Vmax= 86 VV = Vmax sin wtω = 65π rad/sL = 70 mV = 70 x 10-3 Ht=11.5 ms=11.5×10-3 s   It is…

Q: For the LR circuit shown below, R40 12 & r 5 ms. The switch is closed and 10 ms later the current is…

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Q: The current in a 20.0-mH inductor changes with time as /= 2.00t²-8.00t, where / is in amperes and it…

A: Given value--- Inductance = 20 mH. I = 2 t2 - 8 t . We have to find--- (a) Find the magnitude of…

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 that:-Induced emf, E = 16VRate of change of current, didt = 42 A/s

Q: Suppose that you require a total inductance of 50 mH. You have available a 10 mH coil and a 22 mH…

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Q: a Suppose the transformer of Figure 1 has 500 turns on its primary and 1000 turns on it: secondary.…

A: Given that,Number of turns on primary, NP=500Number of turns on secondary, NS=1000turns ratio , a=…

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: Given that-EMF 'ε'= 9.7×10-3 Vdidt= 2.7 A/sEMF of a coil 'ε'= -M×dIdt     .... Equation 01after…

Q: Two coils of wire are placed next to each other. The current in the first coil increased from 0 to…

A: According to the laws of electromagnetic induction, the induced emf in the coil is given by  where,…

Q: Determine the inductance L of the primary of a transformerwhose input is 220 V at 60.0 Hz if the…

A: Given: The input voltage applied to the transformer is V=220 V. The frequency of the transformer is…

Q: The energy stored in an inductor of self inductance L henry carrying a current of I ampere is : (B)…

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Q: The inductance of a closely packed coil of 400 turns is 6.5 mH. Calculate the magnetic flux (per…

A: The coil with 400 turns can be considered as a solenoid. The expression for inductance of a solenoid…

Q: A 7.50 nF capacitor is charged to 12.0 V, then disconnectedfrom the power supply and connected in…

A: Given: The value of the capacitor is 7.50 nF.            The voltage is 12 V.             The time…

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

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Q: A long solenoid with a axa square cross section has n turns per length sits iwth a vertical central…

A: The mutual inductance between the long solenoid and the flat circular coil can be found by…

Q: When 100 volt D.C is applied across a coil, a current of one ampere flows through it, when 100V ac…

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Q: List down 3 ways in increasing the EMF of induced coil.

A: EMF is directly related to magnetic flux through the coil so if we increase magnetic flux  per unit…

Q: How fast can the 160 A current through a 0.230 H inductor be shut off if the induced emf cannot…

A: Given: current=160 A inductor=0.230 H Formula used: V=-Ididt

Q: Induced potential difference of 5V is developed across a coil when the current flowing through it…

A: Given: The induced potential difference, V= 5 v Current decrease at the rate of di/dt=-25 A/s A…

Q: Calculate the self-inductance L if 10A current is flowing in the 4 turns air filled coil.

A: Given data, Number of turns in the solenoid = 4 Length = 2 cm Current through the coil = 10 A

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.