A 35-turn 12.5-cm-diameter coil is placed between the polepieces of an electromagnet. When the electromagnet isturned on, the flux through the coil changes, inducing anemf. At what rate (in T/s ) must the magnetic field changeif the emf is to be 120 V?

Q: The torque that a uniform magnetic field exerts on a flat (planar) coil is given by T = NBIAsin 0,…

A: 1. Area(A) 2. The magnitude of the torque. given, magnetic fieldB=1.92×10-4 TCurrentI=6.17 Asemi…

Q: tance of the loop in (Figure 1) is 0.16 Ω. Is the magnetic field s

A: Given:- The resistance of the loop in (Figure 1) is 0.16 Ω Find:- a)Is the magnetic field strength…

Q: ue of the magnetic flux through the coil due to the wire with

A: magnetic flux through the coil

Q: A 31-turn circular coil of wire has diameter 0.91 m. It is placed with its axis along the direction…

A: Given data Number of turns, N=31 Diameter, d=0.91 m Magnetic field , B=53 μT=53×10-6 T  ∆t=0.2 sec…

Q: Ifr= 0.17 m, kai = 3.0 A and leire = 49 A. Given that the magnetic field at the centre of the coil…

A: r = 0.17 m Icoil = 3 A Iwire = 49 A distance between wire and coil = 0.05 m The magnetic field at…

Q: A 31-turn circular coil of wire has diameter 0.91 m. It is placed with its axis along the direction…

A: The initial flux through the coil, ϕ1=NBAcosθϕ1=3153.0×10-6 Tπd24cos0oϕ1=3153.0×10-6 Tπ0.91…

Q: A 25-turn circular coil of wire has diameter 1.00 m. It is placed with its axis along the direction…

A: Given: Number of turns, N=25 Diameter of coil, d=1 m Radius of coil, r=d2=12=0.5 m Earth's magnetic…

Q: A toroidal magnetic field of 3.5 tesla is required at the middle of the torus, i.e. at r = 53 cm.…

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Q: Circular wire coils with a diameter of 0.64 m are made up of 30 turns. In 0.40 s, it is turned 180…

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Q: A coil of 10.0 turns is in the shape of an ellipse havinga major axis of 10.0 cm and a minor axis of…

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Q: A long solenoid is wound with 960 turns per meter of thin wire through which a current of 17.2 mA is…

A: Given: Current inside solenoid i = 17.2 mA Turns N = 960 Turns per meter length.

Q: The coil in a loudspeaker has 50 turns and aradius of 3.8 cm. The magnetic field is perpendicular to…

A: Expression of the total force on the coil -  F=nBiL Where,  L=2πr    (For coil)  Therefore,…

Q: A 22-turn circular coil of wire has diameter 0.93 m. It is placed with its axis along the direction…

A: The expression to solve for the induced emf can be written as ε=-NdΦdt…

Q: A bar slides on two frictionless rails in the plane of the page. The resistor is 6.00 Ω, and a 2.50…

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

Q: A maximum e.m.f of 110 volt is induced in a generator whose coil rotate with a Frequency of 50HZ .If…

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Q: The wingspan of a metal aeroplane is 36 m. If the aeroplane is flying at 400 km/h, determine yhe emf…

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Q: Check Your Understanding A closely wound coil has a radius of 4.0 cm, 50 turns, and a total…

A: The heat produced by the current in the coil can be represented by Joule’s equation of electrical…

Q: A current wire of length 67 cm placed in a magnetic field of 0.34 T such that it makes an angle 42°…

A: Length of wire l=67cm Magnetic field= 0.34T Force on wire = 2.04 N  Theta=42°

Q: A circutar.coll (900 turns, radius - 0.145 m) is rotating in a uniform magnetic field. At fieid. At…

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Q: A 34-turn circular coil of wire has diameter 0.92 m. It is placed with its axis along the direction…

A:

Q: A 32-cm-long solenoid, 1.8 cm in diameter, is to produce a0.050-T magnetic field at its center. If…

A: Given, Length of the solenoid, L= 32 cm=0.32 m, Magnetic Field, B=0.05 T, Current, I= 6.4 A, and…

Q: A wire of resistance 0.50 ohms forms a loop of area 7.85*10^5 m^2, andthen is placed in a uniform…

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Q: Cônsidér thé árrangement shown the figure belów. Assumé R = 4.00 and ? = 1.10 m, and a uniform…

A: Time varying magnetic fields produces a induced EMF which in turn produces current. This EMF depends…

Q: A 0.220 m radius, 525 turn coil is rotated one fourth of a revolution in 4.17 ms, orginally having…

A: Radius of coil r = 0.220 m Number of turns N = 525 Time ∆t = 4.17 ms = 4.17×10-3 s Induced emf ε =…

Q: A long solenoid is wound with 960 turns per meter of thin wire through which a current of 13.8 mA is…

A: A solenoid is a coil of multiple turns wound on a cylindrical object such that when current flows…

Q: Suppose another solenoid is to be designed to produce a uniform 1.350-T magnetic field near its…

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Q: A wind turbine generator contains a circular coil that is rotated fully through a 100-turn cycle. If…

A: The expression for the required radius is,

Q: A 34-turn circular coil of wire has diameter 0.97 m. It is placed with its axis along the direction…

A: Given, Number of turns, N = 34  diameter of the coil, d = 0.97 m Earth's magnetic field, B = 41.0 μT…

Q: A long solenoid is wound with 960 turns per meter of thin wire through which a current of 44.1 mA is…

A: Given Number of turns per unit length is n=960 turns/m Current passing through the wire is…

Q: The rectangular coils in a 355-turn generator are 13 cm by 19 cm.What is the maximum emf produced by…

A: Given: The number of turns is 355. The dimensions are 13 cm by 19 cm. The angular speed is 505 rpm.…

Q: What EMF would be induced for a Canada goose with a wingspread of 1.5 m flying 10 m/s in a region…

A: The motional emf is given by  e = B v L

Q: How much current must pass through a horizontal power tranS- missien cable in order for the magnetic…

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Q: A 21-turn circular coil of wire has diameter 0.92 m. It is placed with its axis along the direction…

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Q: A long solenoid is wound with 960 turns per meter of thin wire through which a current of 19.7 mA is…

A: A solenoid can be termed to be an electrical device that will act as an electromagnet when current…

Q: A very long hollow cylindrical coil with a cross-sectional area of 70 cm? and the number of turns…

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Q: the coil's sides are 14.6 cm long, the external magnetic field strength is Bext = 0.783 T, the coil…

A: Sides, a = 14.6 cm = 14.6×10-2 = 0.146 m Magnetic field, Bext = B = 0.783 T Number of turns, n = 37…

Q: A rectangular coil with resistance R has N turns loops), cach of length t and width w as shown in he…

A: Write the given values of the problem- Resistance=R Velocity=V Magnetic field=B Turns loop=N

Q: Consider the arrangemcnt shown in the Figurc. Assume that R = 6.002, 1=1.20m, and a uniform 2.50T…

A: Given in question - Resistance (R) = 6.00Ω                                  Length (L) = 1.20m…

Q: A 22-turn circular coil of wire has diameter 0.93 m. It is placed with its axis along the direction…

A: Given data The number of turns is N=22 The diameter is d=0.93 m The magnetic field is B=43.0 μT The…

Q: Suppose that a 0.25 m radius, 500 turn coil produces an average emf of 11300 V when rotated…

A: Here, εavg=NAB∆t=11300V The distance covered in one-fourth revolution will be, ∆θ=14×2π=π2

Q: Calculate the magnetic field strength needed on a 200-turn square loop 20.0 cm on a side to create a…

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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.