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: A square loop of wire with 10 turns and a side length of 3 cm sits in a uniform magnetic field that…

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Q: The magnetic flux that passes through one turn of a 17-turn coil of wire changes to 4.12 from 10.3…

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Q: An emf is induced by rotating a 1067 turn, 20.0 cm diameter coil in the Earth's 3.33  10-5 T…

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Q: a b -b- A coil with a = 10.800 cm and b = 13.000 cm is in the same plane with a long straight wire.…

A: The objective of this question is to calculate the electromotive force (emf) in a coil at a given…

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Q: A scientist wearing a circular metal cuff on his wrist moves his hand into a uniform magnetic field…

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Q: The magnetic flux through a coil of wire containing two loops changes from -57.1 Wb to 17.7 Wb in…

A: Faraday's law of electromagnetic induction states that the magnitude of induced emf is equal to the…

Q: If an alternator coil is 13 cm in diameter and is spinning at 1150 revolutions per minute in a 0.13…

A: Using Faraday’s law, the emf induced is,

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Q: The magnetic flux that passes through one turn of a 18-turn coil of wire changes to 2.21 from 10.6…

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Q: A air-filed solenoid 3.3 m diameter and length 23 cm, has 100 turns. If the current increases from 9…

A: (a) Let d denotes the solenoid’s diameter, A denotes the area, l denotes the solenoid’s length, N…

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Q: Consider a transformer, used to recharge rechargeable flashlight batteries, that has 500 turns in…

A: Given: The turns in the primary coil is 500. The turns in the secondary coil is 7. The input voltage…

Q: The circuit shown in the figure contains a resistor and a solenoid. A battery is connected by…

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Q: What is the peak emf generated by rotating a 1070-turn, 16 cm diameter coil in the Earth’s 5·10−5 T…

A: Number of turns (N) = 1070 Diameter (d) of coil = 16 cm = 0.16 m Magnetic field (B) = 5×10-5 T Time…

Q: A coil of 1000 turns encloses an area of 25 cm2 and is in a magnetic field of strength 3e-6 T which…

A: Number of turns (N) =1000 Area (A) = 25 cm2  B1 = 36e-6 T  B2 = 0 T  ∆t = 0.5 min = 30 sec  (half a…

Q: A conducting wire shaped in a "U shape" is connected to a 5 ohm light bulb. The 0.8 T external…

A: The objective of the question is to calculate the induced electromotive force in a conducting wire…

Q: The 1200-turns coil in a dc motor has an area of 1.5 ×10–2 m2. The design for the motor specifies…

A: number of turns in coil , N = 1200 turns  Area A = 1.5 * 10-2 m2  Maximum Torque τ = 7.2 Nm…

Q: The magnetic flux through the loop increases according to the relation B 6.0t² + 7.0t as show in the…

A: The magnetic flux as a function of time is given by,

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Q: True or The SI unit of flux is the tesla while the SI unit of flux density is the weber.   True or…

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Q: A solenoid consists of 150 turns of wire. Each turn is a circle with diameter of d = 20 cm, and a…

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Q: In the figure, a wire loop of dimensions L= 42.6 cm and W = 26.7 cm lies in a magnetic field. What…

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

Q: PB = B_A = BA cos 0 Vinduced = -N At A magnetic B field of strength 0.2 T is perpendicular to a loop…

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Q: A 80-cm side length square coil has 145 turns. An initial uniform magnetic field of strength 6.5 mT…

A: Given:-             B = 6.5 mT L = 80 cm N = 145 turns

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.