in the figure below, a square loop with 10 turns that is 10.0 cm on a side has a magnetic field pointed into the page that is decreasing at the rate of 1.0 T/s.   a) What is the magnitude of the emf generated in the wire  and what is the direction of the resulting current along the top side of the loops?       b) Assume the self inductance is 4.1 x 10-4 H and the wire’s resistance is 11 Ohms.  How much energy is stored by the inductor while the magnetic

Q: The above figure shows a conducting loop of radius 12 cm in a 0.15 T magnetic field. The coil is…

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Q: Ex.1 A 100-loop square coil of wire, with side L=5 cm. and total resistance R=100 Ohm is positioned…

A: n= 100  L= 0.05m  R= 100 ohm  B= 0.6 T  t= 0.1s

Q: B α (0 a F An alternating current generator has a square loop (with side length a) mounted on a…

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Q: The figure below shows a rectangular coil of length e and width w consisting of N turns of…

A: Part (a) The magnitude of emf induced in the coil is, ε=Ndϕdtε=NdBAdtε=NdBwldtε=NBwdldtε=NBwv Here,…

Q: A flat coil of wire, consisting of 20 circular loops with a total resistance of 20.0 2, is placed so…

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Q: In the figure above, a steady current is flowing through a very long straight wire. A square loop of…

A: Let ε denotes the induced emf, ϕ denotes the flux through the loop, t denotes the time. Therefore,…

Q: A rectangular loop of wire with sides 1 cm and 2 cm is placed inside an extremely long solenoid of…

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Q: Figure shows a circuit with an area of ? = 0.060[m2] containing a ? = 1.0[Ω] resistor and a ? =…

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Q: A rectangular loop with width L and a slidewire with mass m are as shown in figure 1. A uniform…

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Q: A closed loop conductor that forms a circle with a radius of 0.2 m is located in a changing magnetic…

A: Given : Radius (r) = 0.2 m So, Area (A) = πr2 A = 3.14 * (0.2)2 A = 0.1256 m2 Maximum E.M.F. Induced…

Q: Two circular loops of wire lie in the same plane as shown in the figure. If the current in the outer…

A: As current in external loop is clockwise so field will be into the page due to external loop current…

Q: Shown in the figure below is a rectangle of wire immersed in a magnetic field. The rectangle has…

A: Given : l=2 m w=2 m R=7.02 ohm B(t)=5t3+2t4

Q: A conducting rod with a length e 25 cm is placed on a U-shaped metal wire that is connected to a…

A: Given that Length of rod L = 25 cm = 0.25 m Magnetic field B = 0.40 T Speed V = 6 m/s Resistance of…

Q: lies along z (see the figure below). A magnetic field of magnitude B is parallel to the z axis. This…

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Q: When a magnetic field is first turned on, the flux through a 35-turn loop varies with time according…

A: using electromagnetic induction concept and Lenz's law

Q: A circular loop of wire with radius 0.0430 m and resistance 0.152 2 is in a region of spatially…

A: Radius of circular loop (r) = 0.043 m Resistance (R) = 0.152 ohm Initial magnetic field = 8.48 T…

Q: A 500-turns square wire coil rotates about a vertical axis at 2690 rev per min as in FIGURE 5. The…

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Q: Based on the figure 1. (a) What is the induced emf on a wire if exposed to a uniform magnetic field…

A: Faraday’s law of induction states that the induced emf ε in a coil is proportional to the negative…

Q: The figure below shows a rectangular coil of length e and width w consisting of N turns of…

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Q: Below is a closed conducting loop within a magnetic field (for direction see picture). The loop is a…

A: Radius of loop, r=17cm⇒0.17m Rate of change of magnetic field, dBdt=157mT/s⇒0.157T/s Number of…

Q: A rectangular metal loop with 0.050Ω resistance is placed next to one wire of the RC circuit shown…

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Q: (Figure 1) shows a 11-cm-diameter loop in three different magnetic fields. The loop's resistance is…

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Q: 3) Magnetic tape is running at 2 m/s past a closed loop of total area 0.001 m?. The magnetic field…

A: Given that, B=0.03Tx2 Speed of the tape is v = 2 m/s Loop area, A = 0.001 m2 Induced e.m.f, ε=dϕdt…

Q: The drawing shows a straight wire carrying a current I. Above the wire is a rectangular loop that…

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Q: The long solenoid S shown (in cross section) in Figure 9 has 220 turns/cm and carries a current I =…

A: N=Number of turns=130n=Number of turns per unit length=220 turns/cmd=Diameter of coil=2.1…

Q: A metal bar of length L = 2.8 m slides along two horizontal metal rails as shown in the figure…

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Q: 2. The loop of wire in the diagram below forms an equilateral triangle 20 cm on a side. (a)What is…

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Q: The lengths of the sides of the square wire loop in the figure below are 10 cm and the resistance of…

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Q: A conducting rod whose length is 25 cm is placed on a U-shaped metal wire that has a resistance of…

A: Emf induced  E = VBL = 6×0.4×0.25  E = 0.6 V

Q: The square conducting loop shown in the figure lies in the x-y plane. The loop is in a uniform…

A: Rate of decrease of magnetic field=dBdt=-5.9T/s Resistance offered by Loop=97.7Ω Length =3.4m

Q: The single rectangular loop of wire shown on the figure has a resistance of 2.0 2 and is lying on…

A: Resistance = 2 ohm  Magnetic Field = 3 T  Emf = 24 v  Area = 0.25 × 0.4   = 0.1 m2 Using ohms law…

Q: Using the following diagrams, show the directions [in Figure] of (1) Induced Magnetic Field (Band)…

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Q: Shown below is a conducting rod that slides along metal rails. The apparatus is in a uniform…

A: “Since you have posted a question with multiple sub-parts, we will solve first three subparts for…

Q: A wire loop with an area of 2.4×10−2 m2m2 is in a magnetic field of 0.40 TT directed at an angle 30∘…

A: The equation for the induced EMF is given by, ε=-dϕdt=-dBAcosθdt=-AcosθdBdt=-AcosθBf-B∆t=BAcosθ∆t…

Q: The figure below is a top down view of a circular wire coil with rotating clockwise in a uniform…

A: This question can be solved by using the concept of Faraday's law , Lenz law and the force on a wire…

Q: A square loop of wire is inside a region of changing magnetic field (see figure below). The sides of…

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Q: Figure. A loop is placed near a current wire as shown in the figure. I Which of the following will…

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Q: For the circuit below, A = 0.1 m2 shown below, with 10 loops is positioned in a (Bi) 0.500 T…

A: Faraday's law of induction states that the magnitude of the emf induced in a coil due to changing…

Q: The figure below shows a rectangular, conducting loop sitting in the magnetic field of a straight…

A: Given data - A rectangular conducting loop sitting in the magnetic field of a straight wire carrying…

Q: The figure below shows a flexible loop of metal wire with a radius of 14.0 cm. It lies in a magnetic…

A: The flux associated with the conductor having area of cross section A is ϕ=B.A…

Q: A loop of wire has the shape shown in the drawing. The top part of the wire is bent into a…

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Q: Suppose a coil of 1000 turns of wire is wound around a book, as shown in figure below, and this book…

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Q: The magnetic field of the Figure below decreases from 1 T to 0.4 T in 1.2 s. A 6 cm diameter…

A: Given that Initial magnetic field B1 = 1 T Final magnetic field B2 = 0.4 T Time interval ∆t = 1.2 s…

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.