An ?=45.0 cm wire is moving to the right at a speed of ?=7.90 m/s across two parallel wire rails that are connected on the left side, as shown in the figure. The whole apparatus is immersed in a uniform magnetic field that has a magnitude of ?=0.910 T and is directed into the screen. What is the emf  induced in the wire?

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Q: A single loop of steel wire, lying flat in a plane, has an area of 8.60 cm2 and a resistance of 1.80…

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Q: 000 0000000000 OOOOO0.0 What is the length of the rod? m DO DO *o0||0000000000 A rod is moving from…

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Q: A single loop of copper wire, lying flat in a plane, has an area of 7.20 cm2 and a resistance of…

A: As the magnetic field flux changes through a loop this induces and emf in the lopp  which in turn…

Q: A single loop of steel wire, lying flat in a plane, has an area of 7.80 cm2 and a resistance of 2.10…

A: Answer is given below:  Explanation:Question 1:Answer:

Q: coil formed by wrapping 50 turns of wire in the shape of a square is positioned in a magnetic field…

A: Total number of turns N = 50 Angle is 30° Emf e = 80 mV Time 0.4 sec When the magnitude of the…

Q: A circular coil of wire with 450 turns and a radius of 8.5 cm is placed horizontally on a table. A…

A: Given that, N=450 turns R= 8.5 cm =8.5x10-2 m B(t) = 0.03 ×t 2. T/s2 whereas, uniform magnetic field…

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Q: A coil with circular cross section and 24 turns is rotating at a rate of 430 rpm between the poles…

A: a)The required radius is,

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Q: ) If a student picks up the loop and moves it to a bench on the other side of the room, what emf…

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Q: A conducting rail shaped like you see in the picture has a resistance R = 3.40 Q between points (1)…

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Q: Figure shows a rectangular loop of wire in magnetic field regions. Part of the loop lies in uniform…

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Q: Two identical resistors in parallel have an equivalent resistance of 2 Q. If the resistors were in…

A: let the resistance of each identical resistor be r equivalent resistance in parallel= rp = 2

Q: A loop of wire with a diameter of d=0.71 m lies in a plane perpendicular to a magnetic field with…

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Q: lowly turned on, = 0.03 (T /s2) x1

A: Given as, N= 450, r= 8.5 cm= 0.085 m, B= 0.03t2(T/s2).

Q: A circular loop of wire with a radius of 4.0 cm is in a uniform magnetic field of magnitude 0.061 T.…

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Q: The figure below shows a square loop circuit, 10 cm on each side, containing a R = 5.6 Q resistor, a…

A: Given data: Length of the square loop, a=10 cm = 0.1 m Resistance, R=5.6 Ω Emf, ε=7.3 V Capacitance,…

Q: The magnetic flux through a coil of wire changes from 9T m- to zero in a time of 0.50 s. What is the…

A: 18 V

Q: A conducting wire is initially entirely outside a uniform magnetic field. It takes 2 s to move it…

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Q: In the figure, a conducting rod (shown with red outline) is pushed such that it moves at constant…

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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: A 26-turn circular coil of wire has diameter 1.03 m. It is placed with its axis along the direction…

A: Given: Number of turns N=26, Diameter of coil D=1.03 m, Magnetic field B=44 μT=44×10-6 T, Time…

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Q: What is the magnitude of the average emf & induced as the coil is rotated? Express your answer in…

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Q: A single loop of copper wire, lying flat in a plane, has an area of 7.20 cm? and a resistance of…

A: Area of copper wire A = 7.20 cm2 = 7.20 × 10- 4 m2 Resistance of copper wire R = 2.10 Ω Initial…

Q: The figure below shows a top view of a bar that can slide on two frictionless rails. The resistor is…

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Q: The figure below shows a top view of a bar that can slide on two frictionless rails. The resistor is…

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Q: A coil with 20 turns of wire is wrapped around a tube with a cross-sectional area of 1.0 m2. A…

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Q: A single loop of aluminum wire, lying flat in a plane, has an area of 8.20 cm² and a resistance of…

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Q: A single loop of copper wire, lying flat in a plane, has an area of 8.60 cm² and a resistance of…

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Q: An L = 47.0 ncm wire is moving to the right at a speed of v = 6.50 m/s across two parallel wire…

A: Motional EMFWhen a conductor change position with a velocity v in a area of magnetic field B, then…

Q: An L=57.0 cm wire is moving to the right at a speed of v=7.50 m/s across two parallel wire rails…

A: Motional EMF When a conductor change position with a velocity v in a area of magnetic field B, then…

Q: A coil with 31.2 turns of wire is wrapped on a frame with a square cross section 1.68 cm on a side.…

A: Given- Number of turns N= 31.2 Each side a=1.68 cm=0.0168 m So, Area will be…

Q: A square, single turn coil of length 0.02m is placed with its plane perpendicular to a constant…

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Q: A coil of wire with 50 turns lies in the plane of the page and has an initial area of 0.310 m2. The…

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Q: A single loop of steel wire, lying flat in a plane, has an area of 7.80 cm² and a resistance of 1.80…

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Q: A conducting rod is moving through a magnetic field, as in the drawing. The magnetic field strength…

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Q: A 23-turn circular coil of wire has diameter 0.99 m. It is placed with its axis along the direction…

A: Given Data:- Number of turns in the coil is N=23  Diameter of the coil is d=0.99 m Magnetic field…

Q: A flexible circular loop 6.40 cm in diameter lies in a magnetic field with a magnitude of 1.28 T,…

A: Magnetic field B = 1.28 T Circular loop diameter D = 6.40 cm = 0.064 m Final area of the loop Af = 0…

Q: A single circular loop of wire of radius 0.25m is positioned in a uniform magnetic field of 0.25T…

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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.