Rotation axis

Q: A square coil of wire of side 3.35 cm is placed in a uniform magnetic field of magnitude 2.25 T, The…

A: a. the magnitude of flux passing through the loop is  ϕB=NBA

Q: A 109 turn circular coil of radius 2.01 cm is immersed in a uniform magnetic field that is…

A:

Q: A scientist wearing a circular metal cuff on his wrist moves his hand into a uniform magnetic field…

A:

Q: A rectangular coil 0.055 m by 0.085 m is positioned so that its cross-sectional area is…

A: Given data: length of the coil l=0.05m  Breadth of the coil b =0.085m Number of turns N=75 turns…

Q: A coil 2.00 cm in radius, containing 400 turns, is placed perpendicularly in a uniform magnetic…

A: Radius of the coil r=2 cm, number of turns in the coil N=400 which is placed in an uniform magnetic…

Q: A flat, square, 75-turn coil of wire is rotated from having its plane perpendicular to an external,…

A:

Q: A 48 turn conductive loop encloses an area of 71 m 2 At what constant rate should the magnetic field…

A: Given, Number of turns N = 48  Area A = 71m2 emf ε=3.58 Volts   We know the expression for induced…

Q: What is the peak emf generated by rotating a 1070-turn, 16 cm diameter coil in the Earth’s 5·10−5 T…

A: Number of turns (N) = 1070 Diameter (d) of coil = 16 cm = 0.16 m Magnetic field (B) = 5×10-5 T Time…

Q: The conducting rod shown in the figure has length L and is being pulled along horizontal,…

A:

Q: In figure below, the magnetig flux through the circular loop of radius r = 1.8 m increases according…

A:

Q: A circular coil (10 turns, diameter=25cm) is placed perpendicular to a uniform magnetic field…

A:

Q: A 0.65-T magnetic field is perpendicular to a circular loop of wirewith 73 turns and a radius of 18…

A:

Q: A rectangular coil of N turns, each of width a and length b; where N = 80, a= 16 cm, and b = 32 cm;…

A:

Q: A square coil of wire of side 3.95 cm is placed in a uniform magnetic field of magnitude 2.00 T…

A: Given data: Number of turns in the coil, N=32.0 turns Magnetic field, B =2.00 T Side of the square,…

Q: A square coil, enclosing an area with sides 2.0 cm long, is wrapped with 2 500 turns of wire. A…

A:

Q: A planar coil of wire is placed with its plane perpendicular to a uniform magnetic field of 1.6 T.…

A: Rate at which area changes is  dA/dt = - 0.5 m2/s

Q: A coil with 200 turns of wire is wrapped on an 18.0 cm square frame. Each turn has the same area,…

A: Given. Magnetic field change from 0 to 0.5 T in 0.8 sec. Resistance is 2 ohm. N = 200 L = 18 cm

Q: Consider a rectangular loop of wire 6.9 cm by 9.0 cm in a uniform magnetic field of magnitude 1.1 T.…

A:

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 circular coil of wire 7.8 cm in diameter has a resistance of 1.61 2. It is located in a magnetic…

A:

Q: Here you see a single loop of stiff wire, 10.0 cm on a side, immersed in a magnetic field of 0.225…

A:

Q: A coil formed by wrapping 80 turns of wire in the shape of asquare is positioned in a magnetic field…

A: Given,

Q: A rectangular loop (area = 1.4 m²) turns in a uniform magnetic field, B = 1.3 T. When the angle…

A: Given Data:- Area of the loop is A=1.4 m2 Magnetic field is B=1.3 T Angle between the magnetic field…

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.

Q: A conducting circular loop of wire with radius 0.0300 m and resistance 0.40 Ω sits in a region of…

A: Magnetic flux passing through a loop  is given by  ϕ=∫B→.da→=∫B.da Since magnetic field B and area…

Q: A ten-loop coil having an area of 0.23 m² and a very large resistance is in a 0.047-T uniform…

A:

Q: The flexible loop in Figure has a radius of 52.6 cm and is in a magnetic field of magnitude 0.150 T.…

A: Given  Radius =r = 52.6 cm  Magnetic field=B= 0.150 T  Time = t = 0.2 sec  So A1 = πr² = 0.8687 m²…

Q: A rectangular coil of N turns, each of width a and length b; where N = 70, a= 19 cm, and b = 33 cm;…

A: Given information: The symbols have the same meaning as cited in the question.

Q: A conducting rod with length L = 20 cm is being pulled along a long rotated U-shape conductor, with…

A: Given :  Length of rod = 20 cm = 0.20 m Magnetic field, B = 30 mT = 30 × 10-3 T Velocity of rod…

Q: A 145 turn circular coil of radius 2.29 cm is immersed in a uniform magnetic field that is…

A: Radius =2.29 cm number of turns= 145 time= 0.169 s

Q: When a magnetic field is first turned on, the flux through a 20-turn loop varies with time according…

A: a. the induced emf can be expressed as, ε=-Ndϕdt=-Nddt5t2-2t=202-10t=40-200tmV

Q: A flat coil of wire consisting of 15 turns, each with an area of 53 cm², is positioned…

A:

Q: Consider a coil with an area of 0.1 m2 and 17 turns placed in a magnetic field that is perpendicular…

A:

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 flat coil enclosing an area of 0.19 m2 is rotating at 55 rev/s, with its axis of rotation…

A: It is given that

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.