Figure P20.29 shows a bar of mass m = 0.200 kg that can slide without friction on a pair of rails separated by a distance ℓ = 1.20 m and located on an inclined plane that makes an angle 0 = 25.0° with respect to the ground. The resistance of the resistor is R = 1.00 Ω, and a uniform magnetic field of magnitude B = 0.500 T is directed downward, perpendicular to the ground, over the entire region through which the bar moves. With what constant speed v does the bar slide along the rails?

Q: The coil in the figure carries current i = 2.35 A in the direction indicated, is parallel to an xz…

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Q: square coil with 140 turns of wire has sides of length 5 cm. The resistance of the coil is 5.0 Ω.…

A:

Q: A rectangular coil with resistance R has N turns, each of length,l and width w, as shown in Figure…

A: Part A:

Q: The flexible loop in Figure has a radius of 23 cm and is in a magnetic field of magnitude 0.150 T.…

A: Please see the answer in Step 2

Q: Design a current loop that, when rotated in a uniform magnetic field of strength 0.10 T, will…

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Q: Mass m = 1.30 kg is suspended vertically at rest by an insulating string connected to a circuit…

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Q: A permanent magnet has a magnetic dipole moment of 0.130 A m. The magnet is in the presence of an…

A: Given data The magnetic dipole moment is given as m = 0.130 A.m2. The magnetic field is given as B…

Q: A permanent magnet has a magnetic dipole moment of 0.110 A · m2. The magnet is in the presence of an…

A: Given data:  Magnetic dipole moment (M) = 0.110 A.m2 Magnetic field (B) = 0.0800 T Angle (θ) = 16.0°

Q: A 25.0 [cm] rod moves 5.00 [m/s]and is immersed in a magnetic field with strength of 0.50 [T]. The…

A: Given: length of the rod (L) = 25cm = 0.25 m             Velocity of the rod (v) = 5 m/s…

Q: A conducting rectangular loop ofmass M, resistance R , and dimensions w by l falls from rest into a…

A: (a)Magnetic force exerted on the lower end of the loop:

Q: The coil in the figure carries current i = 1.94 A in the direction indicated, is parallel to an xz…

A: Let the area of the coil be A and the number of turns in the coil be N. The magnetic moment of the…

Q: solenoid has the following dimensions. inner diameter d = 5.12 cm length L = 46.7 cm When a current…

A: Given : d = 5.12 cm = 0.0512 m L = 46.7 cm = 0.467 m B = 5.40 T

Q: A very long solenoid with a circular cross section and radius r= 8.10 cm with n= 1.00E+4 turns/m has…

A: Magnetic energy density for a solenoid is given by uB = μ0 n2 I2 /2 Where  μ0 is magnetic…

Q: Chapter 28, Problem 061 The coil in the figure carries current i 2.30 A in the direction indicated,…

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Q: The flexible loop in Figure P20.10 has a radius of 12 cm and is in a magnetic field of strength 0.15…

A: Given:  radius, r = 12 cm = 0.12 m  magnetic field, B = 0.15 T  t = 0.2 s

Q: cylindrical solenoid with 2,000 turns, a radius of 6.00 cm, and a length of 40.0 cm is initially…

A:

Q: A square coil of wire of side 2.80 cm is placed in a uniform magnetic field of magnitude 1.25 T…

A: Given: side, a = 2.8 cm  magnetic field, B = 1.25 T  number of turns, N = 28  Resistance, R = 0.780…

Q: The figure shows a rod of length L = 8.84 cm that is forced to move at constant speed v = 4.19 m/s…

A: We have to find the rate at which the force works on the rod. So this means that we have to find the…

Q: Consider the system pictured in Figure P19.21. A 15-cm length of conductor of mass 15 g, free to…

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Q: Suppose that a solenoid has a length of 75 cm and has a cross sectional area of 0.800 cm². It also…

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Q: Figure P20.29 shows a bar of mass m = 0.200 kg that can slidewithout friction on a pair of rails…

A: The below figure indicates the magnetic field of the bar,

Q: Magnetic field values are often determined by using a device known as a search coil. This technique…

A: The emf induced in the coil is given by, Where N is the number turns in the coil and (Φ2 - Φ1) is…

Q: The coil in the figure carries current i- 1.81 A in the direction indicated, is parallel to an xz…

A:

Q: Consider the arrangement shown in Figure P20.30. Assume R = 6.00 V, ℓ = 1.20 m, and a uniform 2.50-T…

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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: A bar of mass m and resistance R slides without friction in a horizontal plane, moving on parallel…

A: Given data: Mass of bar =m  Resistance in bar =R, Distance between the rails =d.

Q: A square loop (length along one side = 20 cm) rotates in a constant magnetic field which has a…

A:

Q: B A metal bar with length L R=15 N is placed on frictionl ess metal rails that are inclined at an…

A:

Q: The flexible loop in Figure has a radius of 25.5 cm and is in a magnetic field of magnitude 0.150 T.…

A: r

Q: Figure P19.64 is a setup that can be used to measuremagnetic fields. A rectangular coil of wire…

A: Given:Turns in coil = NCurrent in coil = I

Q: Chapter 28, Problem 061 E3 Incorrect The coil in the figure carries current i = 1.67 A in the…

A: a)The expression for the magnetic potential energy,

Q: The coll in the figure carries current i = 1.60 A in the direction indicated, is parallel to an xz…

A: Given data: The current in the coil is i=1.6 A. The number of turns is n=4. Area of coil is…

Q: Mass m = 1.75 kg is suspended vertically at rest by an insulating string connected to a circuit…

A: Here we have to use some basic formula.

Q: In a region of space where the magnetic field of the earth has a magnitude of 80 mT and is directed…

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Q: Q26 1) A 325-turns square loop of 38 cm on a side, carrying a current of 26 A creates a torque of…

A: We need to calculate the strength of magnetic field and the potential energy of the loop.

Q: The figure shows a rod of length L = 8.84 cm that is forced to move at constant speed v = 4.19 m/s…

A: (e) the external agent does work at the rate, Power,   P= F×v Given, Force applied to rod  F=…

Q: Consider the arrangement shown in the figure below where R = 5.50 Q, { = 1.10 m, and B = 2.75 T.…

A: Hello. Since your question has multiple sub-parts, we will solve first three sub-parts for you. If…

Q: A metal disk 13.0 cm in diameter rotates about its circular axis of symmetry at an angular speed of…

A: so induced emf, v=-dϕdt=-BdAdtnow, A=πr2so,dAdt=πr2ω2πso,absolute voltage, v=Br2ω2

Q: A conducting rod of length l= 35.0 cm is free to slide on two parallel conducting bars as shown in…

A: Given : Length of a conducting rod (ℓ) = 35 cm = 0.35 m Resistor , R1 = 2.00 Ω  Resistor , R2 = 5.00…

Q: A single loop of wire encloses an area of 3.5x10-² m². It is in a magnetic field that changes from…

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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.