The figure below shows a zero-resistance conducting rod with mass 3.07 g (i.e. 3.07 grams) in contact with two vertical conducting rails separated by a distance L = 26.0 cm. The entire system is immersed in a magnetic field of magnitude B Assume the rod slides without friction. Let R =15.0 Q. = 0.752 T pointing into the page.

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Q: Even if the rotor of a simple DC motor has negligible resistance, there is still a non-vanishing…

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Q: Assume that the resistance = 3.9 ohms, the width of the rails is 2.2 m, the magnetic field magnitude…

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Q: A conductor 120 cm long and carrying a current of 10 A, lies at right angle to a magnetic field of…

A: Force on current carrying conductor is given by :F = i(l→×B→)or F = ilBsinθ  -(eq1) here i = current…

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Q: (a) A car generator turns at 400 rpm when the engine is idling. Its 300-turn, 5.00 by 8.00 cm…

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Q: A tangent galvanometer has 50 turns each of diameter 15 cm,. When certain current is passed through…

A: To find-Current (I)=?Given-n=50Diameter=15 cmradius (r)=7.5×10-2 mθ=450BH=2×10-5 Wb/m2μ0=4π×10-7…

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A: Given: Length of the conductor, l = 1.3 m Magnitude of magnetic field, B = 6.5 T electromotive…

Q: As shown a compact, circular coil with 220 turns and radius 12.0 cm immersed in a uniform magnetic…

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Q: -As a result of change in the magnetic flux linked to the closed loop shown in the figure, an emf V…

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Q: R = 8.50 Ω, ℓ = 1.40 m, and B = 2.75 T. At what constant speed (in m/s) should the bar be moved to…

A: Given, Resistance, R = 8.50 Ω Length, l = 1.40 m Magnetic field, B = 2.75 T Current, i = 1.60 A i)…

Q: A square circuit with sides of length ℓ = 0.30 m and R = 10 ? moves with a constant velocity v = 3.0…

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Q: If the current running through an inductor is increased by a factor of 3, by how much does the…

A: Given:- The  current running through an inductor is increased by a factor of 3 Find:- how much…

Q: A solenoid of length 50 cm and cross-sectional area of 4 cm2 can store energy of 200 mJ when it is…

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Q: Consider that the energy of the magnetic field inside a coil with a DC current is equal to 0.5 J.…

A: The DC current =0.5J  The magnetic flux through the coil 2.3Wb  To find the electric current flowing…

Q: In the accompanying figure, the rails, connecting end piece, and rod all have a resistance per unit…

A: Given: Resistance per unit length of all connecting end piece and rod is 2.0 Ω/cm The rod moves to…

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Q: A technician wraps wire around a tube of length 44 cm having a diameter of 7.0 cm. When the windings…

A: dia of tube = 7cm length of wire = 44cm therefore the number of turn N =730 self-inductance of coil…

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Q: Consider that the energy of the magnetic field inside a coil with a DC current is equal to 0.7 J.…

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Q: (a) A nonferrous screwdriver is being used in a 2.00 T magnetic field. What maximum emf can be…

A: Given: magnetic field, B = 2 T  length, L = 12 cm = 0.12 m  velocity,v = 6 m/s

Q: The Figure shows a wire with a kink.The wire has a resistance of 3.85 W. A uniform magnetic field…

A: Given, Magnetic field B = 17.0 mT = 17 x 10-3 T diameter of kink d = 1.75 cm = 1.75 x 10-2 m radius…

Q: It is desired to construct a solenoid that will have a resistance of 4.20 N (at 20°C) and produce a…

A: SOlution: Given that R =4.2 Ohm B= 4x10-2 T I = 3.95 A d = 0.5 mm r = 1 cm copper resistivity =…

Q: Consider the arrangement shown in the figure below where R = 8.50 Q, = 1.00 m, and B = 3.00 T. R.…

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Q: An alternating voltage given as; V=100 √2 sin100t is applied to a capacitor of 1 μF. Calculate the…

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Q: When a current of 60 mA is passed through the coil of a tangent galvanometer a deflection of 45°is…

A: We have to find, BH Given that, I=60 mA=60×10-3 A=6×10-2 Aθ=45°n=50 turns,r=8.8 cm=8.8×10-2…

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Q: (a) Define self and mutual induction. Give practical examples of both inductions. (b) A circular…

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Q: A solenoid of 400 turns and length 6 cm, and radius 2 cm is surrounded by a single coaxial loop of…

A: **as per our company guidelines we are supposed to answer only first 3 sub-parts. Kindly repost…

Q: For a toroidal solenoid with the average circumference L =10 cm and 200 coils, the current is 100…

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Q: A 120.0-V motor draws a current of 6.64 A when running at normal speed. The resistance of the…

A: Given value--- motor voltage = 120 V. current = 6.64 A. resistance of armature wire = .651 ohm. We…

Q: A coil (N=300 turns; A=0.1 m2) is placed in a magnetic field B=0.5 T such that Ө changes from 90…

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Q: A toroidal solenoid has a magnitude of induced emf of 10.3 [mV] when the rate of change of the…

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Q: The figure shows a bar of mass 0.2kg that can slide without friction on a pair of rails separated by…

A: Given: Mass m = 0.2 kg Distance l =1.20 m Resistance R =1 Ω Angle θ =25° Magnetic field H=0.5 T

Ferromagnetism

Ferromagnetism is a mechanism by which some materials show magnetic properties. Iron and magnetite, an oxide of iron, are two naturally occurring materials that show the property of ferromagnetism. The word ferromagnetism is derived from the Latin name of iron, "Ferrum" as it was the first observed material to show such property. The property of ferromagnetism is shown by only a few substances such as iron, nickel, cobalt, and their alloys. Some transition metals and alloys of rare-earth metals also show ferromagnetism.