A flat coil of wire has an area A, N turns, and a resistance R. It is situated in a magnetic field, such that the normal to the coil is parallel to the magnetic field. The coil is then rotated through an angle of 90˚, so that the normal becomes perpendicular to the magnetic field. The coil has an area of 1.5 × 10-3 m2, 50 turns, and a resistance of 150 Ω. During the time while it is rotating, a charge of 6.0 × 10-5 C flows in the coil. What is the magnitude of the magnetic field?

Q: A five-sided object, whose dimensions are shown in the drawing, is placed in a uniform magnetic…

A: CONCEPT:

Q: The figure shows a 10-cm-diameter loop in three different magnetic fields. The loop's resistance is…

A: Given :- loop diameter = 10 cm = 0.1 m Radius r= 0.1/2 = 0.05 m Resistance R = 0.10 Ω

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Q: A loop of radius a = 7.5 cm lays in the x-y plane, in a region of uniform, time-dependent magnetic…

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A: a) An equilateral triangle with side a Number of loops = 4 Area of the triangle A = √3/4 a2 Magnetic…

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Q: f the magnitude of the magnetic induction is less than that in a vaccum within a solid, so, this…

A: The diamagnetic materials have very weak magnetism. The magnitude of the its magnetic induction is…

Q: A flat coil of wire has an area A, N turns, and a resistance R. It is situated in a magnetic field,…

A:

Q: A square coil of wire of side 2.25 cm is placed in a uniform magnetic field of magnitude 2.00 T…

A: Here length of square = 2.25 cmUniform magnetic field = 2TTurns of the coil (N) = 27.5Resistance (R)…

Q: A wire loop of radius 17 cm and resistance 112 is located in a uniform magnetic field that changes…

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Q: A flat coil of wire has an area A, N turns, and a resistance R. It is situated in a magnetic field,…

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Q: 1. In a coil of resistance 100 2, a current is induced by changing the magnetic flux through it as…

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Q: A rectangular loop with the given dimensions is being pulled out of a uniform magnetic field of…

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Q: A solenoid ring with N= 3 loops is immersed in a uniform time-varying magnetic field (shown in the…

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Q: A coil has an area of 100 cm2 with 158 turns connected across a 5.00 Q resistor to form a closed…

A: The average current in the coil during this time will be = 17.6 A.

Q: *Chapter 30, Problem 021 In the figure, a stiff wire bent into a semicircle of radius a = 2.7 cm is…

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Q: A square coil of wire of side 2.50 cm is placed in a uniform magnetic field of magnitude 1.75 T…

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Q: solenoid of 35 turns and area 20 cm2 has its ends connected together though a resistance of 5 Ohms.…

A: Given  number of turns N = 35  area A = 20 cm2 = 20 × 10-4 m2  resistance R = 5 ohm  magnetic flux…

Q: A square coil of wire of side 2.55 cm is placed in a uniform magnetic field of magnitude 1.75 T…

A:

Q: A coil has an area of 100 cm? with 181 turns connected across a 5.00 Q resistor to form a closed…

A: From Faraday's lawwe know induced emfε=dϕdthere A= areaA=100cm2A=10-2 m2

Q: The armature of an AC generator consists of 10 turns of wires, with an area of 0.5 m2 each, having a…

A: Given:no of turns of wire, n = 10Area, A = 0.5 m2total resistance, R = 15 ΩMagnetic field, B = 0.75…

Q: A square coil of wire of side 2.35 cm is placed in a uniform magnetic field of magnitude 2.00 T…

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Q: A metallic wire of uniform cross-section and resistance R is bent into a circle of radius a. The…

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Q: A coil of wire with 3 turns is attached to a 5 Ohm resistor and is oriented perpendicular to a…

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Q: circular loop of copper wire has a radius of 12 cm and a resistance per unit length of 3.3 x 10-2…

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Q: A square wire loop of 19 cm side and resistance 12 is in the middle of a magnetic field with outward…

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Q: A square coil of wire of side 3.05 cm is placed in a uniform magnetic field of magnitude 1.75 T…

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Q: A flat circular coil of 1 cm radius is rotated at 10 revolutions per second about an axis that is…

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Q: 4. A toroidal solenoid has an average radius of 10.0 cm, a cross-sectional area of 10.0 cm2 and 1000…

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Q: We move a square loop of wire 2.8 cm on a side into a region of uniform magnetic field of 1.7 T with…

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Q: A square coil of wire of side 2.85 cm is placed in a uniform magnetic field of magnitude 2.25 T…

A: (a) Write the formula for the area of a rectangular coil.

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Q: A 227-turn circular coil of radius 24 cm is perpendicular to a uniform magnetic field of 0.55 T.…

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Q: A square coil of wire of side 3.20 cm is placed in a uniform magnetic field of magnitude 2.25 T…

A: The area of a square coil is, A=3.20 cm3.20 cm=0.032 m0.032 m=1.024×10-3 m2 The magnetic field is,…

Q: A five-sided object, whose dimensions are shown in the drawing, is placed in a uniform magnetic…

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

Q: A coil has an area of 100 cm? with 224 turns connected across a 5.00 Q resistor to form a closed…

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Q: (9) A conducting rod of length l= 25 cm is placed on a U-shaped metal wire that is connected to a…

A: Given  length(l)=0.25 m resistance (R)=8.0 ohms magnetic field (B)=0.40 T speed (v)=6.0 m/s Required…

Q: A solenoid ring with N = 3 loops is immersed in a uniform time-varying magnetic field (shown in the…

A:

Q: A coil has an area of 100 cm2 with 282 turns connected across a 5.00 Q resistor to form a closed…

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Q: A piece of insulated wire is shaped into a figure eight as shown in Figure P.SI.20. For simplicity,…

A: According to Faraday's law of electromagnetic induction, the emf induced in the coil is directly…

Q: A wire loop that encloses an area of 15 cm? is perpendicular to a magnetic field of 0.10 T. If the…

A: given data area = 15cm2 magnetic field = 0.10 T field is drops to 0.04 T in 0.2 s average emf…

Q: A flat coil of wire has an area A, N turns, and a resistance R. It is situated in a magnetic field,…

A: Given: The area of the coil is 1.5x10-3 m2. The number of the turns is 50. The resistance of the…

Q: 5-turn conducting loop with a radius of 3.0 cm with axis of rotation in the plane of the paper spins…

A: Maximum emf is given by  E=NABw

Q: A square coil of wire of side 3.55 cm is placed in a uniform magnetic field of magnitude 1.50 T…

A: (a)In the initial orientation of the coil, the magnetic flux passing through the loop is,After loop…

Q: A coil has an area of 100 cm2 with 297 turns connected across a 5.00 Q resistor to form a closed…

A:

Q: A square coil of wire of side 3.30 cm is placed in a uniform magnetic field of magnitude 2.50 T…

A: Consider the side of the square coil be l, its area be A, the magnetic field be B, the number of the…

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.