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.

Q: A flat coil enclosing an area of 20 cm* 30 cm is rotating at 60 rev/sec, with its axis of otation…

A:

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

A: The DC motor which has some current running through it and whose rotor has negligible resistance has…

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

A:

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

A: (a) Angular frequency, f = 400 rpm =6.67 rps  number of turns, N = 300  Area, A = 0.05 x 0.08 m2…

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…

Q: It is desired to construct a solenoid that will have a resistance of 5.45 (at 20°C) and produce a…

A:

Q: A solenoid of 36 turns and area 20 cm2 has its ends connected together though a resistance of 5…

A: Using Faraday's law of electromagnetic induction Where e = emf induced, t = time,  = Magnetic flux

Q: Consider a coil of wire wrapped around an iron core. If the flux in the core is given by the…

A:

Q: It is desired to construct a solenoid that will have a resistance of 4.80 N (at 20°C) and produce a…

A: Resistance = 4.8 ohm resistivity= 1.7 x 10-8 ohm.m radius of wire= 0.25 mm Current =3.9 A…

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

A:

Q: It is desired to construct a solenoid that will have a resistance of 5.75 (at 20°C) and produce a…

A: Resistance = 5.75 Temperature = 200C Magnetic field = Current = 4.85 ADiameter of wire= 0.500…

Q: You wish to construct a solenoid with a diameter of 2.00 cm that will produce a magnetic field of…

A: Hey dear this is easy question from Magento Statics . Have a look

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…

A: When a closed circuit brings in a magnetic field or is close to the magnet so that the magnetic…

Q: to support an energy density of 1.00 J/m^3 within the volume of the solenoid, how much current must…

A:

Q: In the situation below a wire carrying a current I is near a square loop of wire also carrying a…

A:

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

A:

Q: A solenoid of 69 turns and area 20 cm2 has its ends connected together though a resistance of 5…

A: Given value--- No. of turns = 69. Area = 20 cm2.  Resistance = 5 Ohm. Magnetic field = 3 × 10-2 T.…

Q: One hundred turns of (insulated) copper wire are wrapped around a wooden cylindrical core of…

A:

Q: The magnetic flux through a coil of wire Λ changes from 30T *m ^ 2 to zero in a time of 0.50 s. What…

A:

Q: A constantan wire of length 12 m and having a cross sectional area 1.3x10-4 m2 is converted into…

A:

Q: A conducting bar moves in a constant magnetic field ? = 3 T az. The length of the bar L = 1m.…

A:

Q: A long, cylindrical solenoid with 100 turns per centimeter has a radius of 18.7 cm. If the current…

A:

Q: A segment of wire 5.7 cm long is moving at a velocity of 2.89 m/s toward a parallel (much longer)…

A:

Q: The bolt of lightning depicted in the figure passes 200 m from a 90 turn coil oriented as shown. If…

A:

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: A metal wire of area of cross section 1.6 × 10-7 m² and specific resistance 8 × 10-6 m is bent into…

A: We need to find-Speed of loop (v)=?The data given as-Area of cross-section (A)=1.6×10-7 m2Specific…

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

A:

Q: The figure shows a copper rod moving at a velocity of 7 m/s parallel to a long straight wire…

A:

Q: A Rowland ring is formed of ferromagnetic material. It is circular in cross section, with an inner…

A:

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

A:

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

A:

Q: A cycle wheel has 10 spokes each of length 0.5 m long is rotated at a speed of 18 km/hr in a plane…

A:

Q: An electric field of 132 x10-6 V/m is induced within the loop of long solenoid with cross sectional…

A: Given: The electric field is E=132x10-6 V/m. The cross-section area is A=6.43 cm2 The radius of the…

Q: In which case does the magnetic flux through the loop increase? In which case does the induced…

A: Refer explanationExplanation:(1) Case (A) The loop is at a constant distance from the wire thus the…

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.