The figure below shows a top view of a bar that can slide on two frictionless rails. The resistor is R = 5.80 Ω, and a 2.50-T magnetic field is directed perpendicularly downward, into the page. Let ℓ = 1.20 m. Calculate the applied force required to move the bar to the right at a constant speed of 70m/s. At what rate is energy delivered to the resistor?

Q: Problem 2. A linear machine has the following characteristics: magnetic flux density B = 0.5 T into…

A: Given, magnetic flux density is, B=0.5T --into the page, length of bad, L=0.5m external resistance,…

Q: The figure(Figure 1) shows a zero-resistance rod sliding to the right on two zero-resistance rails…

A:

Q: A wire loop with a resistance, R = 0.160 Ohms is pulled to the right out of a region with a uniform…

A: The expression for the required force is,

Q: A coil with 8 turns has square loops measuring 0.2m on a side and a resistance of 3Ω. It is placed…

A:

Q: A wire loop with a resistance, R = 0.174 Ohms is pulled to the right out of a region with a uniform…

A: Given Resistance R=0.174 Ω B=0.468T L=0.189m v=17m/s

Q: The figure below shows a top view of a bar that can slide on two frictionless rails. The resistor is…

A:

Q: A metal wheel with an area of 30 m2 spins at 2 rpm about a vertical axis at a place where Earth’s…

A: The magnetic field passes is along the vertical axis, and its is perpendicular to the area vector.…

Q: The figure below shows a top view of a bar that can slide on two frictionless rails. The resistor is…

A: a)The required applied force is,

Q: The slide generator in the figure below is in a uniform magnetic field of magnitude 0.0500 T. The…

A:

Q: A circular coil enclosing an area of 120 cm is made of 210 turns of copper wire (shown in the figure…

A: Solution:-Given thatArea of circular coil (A)=120 cm2=0.012 m2Number of turns (N)=210 turnsR=7…

Q: If a coil of wire in a magnetic field rotates 60 degrees, it provides an emf averaging 3.0 V. If the…

A:

Q: You Answered Correct Answer A circular loop of wire of cross-sectional area A=14.9cm² consists of…

A:

Q: A flat, square coil of 20 turns that has sides of length 15.0 cm is rotating in a magnetic field of…

A: Given Number of turn is N=20 One side of square is 15.0cm=0.15m Area of square coil A=(0.15)2…

Q: Figure 2 shows a top view of a bar (the resistor of the bar R2 = 5.00 Q) , that can slide on two…

A:

Q: Problem 8: In the arrangement shown in the figure, the resistor is 5.0 and a 4.0 T magnetic field is…

A: Since the bar is moving at a constant speed, the net force acting on it must be zero. Therefore, the…

Q: A rectangular loop with width L and a slidewire with mass m are as shown in figure 1. A uniform…

A:

Q: A coil with circular cross section and 24 turns is rotating at a rate of 430 rpm between the poles…

A: a)The required radius is,

Q: Q.05 The armature of a small generator consists of a flat, square coil with a side-length of 1.60 cm…

A:

Q: ) If a student picks up the loop and moves it to a bench on the other side of the room, what emf…

A:

Q: An L = 47.0 cm wire is moving to the right at a speed of v = 7.10 m/s across two parallel wire rails…

A:

Q: In the figure below, two straight conducting rails form a right angle. A conducting bar in contact…

A: Given data B=0.395 Tv=7.53 m/sec

Q: A flat, square coil of 20 turns that has sides of length 15.0 cm is rotating in a magnetic field of…

A: number of turns, N = 20  side, a = 15 cm = 0.15 m magnetic field, B = 0.05 T  maximum emf, eo = 30…

Q: A conducting rail shaped like you see in the picture has a resistance R = 3.40 Q between points (1)…

A:

Q: Problem 6: A rod AB with length L-0.195 m is lying on a rectangular conducting loop of zero…

A: Since we are entitled to answer up to 3 sub-parts, we’ll answer the first 3 as you have not…

Q: An aeroplane is flying due North at a speed of 227 m/s. The distance between the tips of the two…

A:

Q: A jet airplane with a 75.0 m wingspan is flying at 260 m/s.What emf is induced between the wing tips…

A: Given that the value of wingspan and speed and also given the magnetic field.Then We have to…

Q: Below is a Motional EMF problem with a sliding, conducting bar connecting a wire loop within a…

A: Given:- The velocity of the bar V = 25.0 m/s  The magnetic field B = 0.640 T  The resistance in the…

Q: Consider a conducting rod of length 28 cm moving along a path of rails, and a magnetic field…

A: Given- Length of rod d=28 cm=0.28 m  EMF V= 1.25V Magnetic field B=1.3 T

Q: The figure below shows a top view of a bar that can slide on two frictionless rails. The resistor is…

A: If the strength of the magnetic field is also increased then the wire moves through a stronger…

Q: A stationary square coil of area 0.1 m2 is brought into the magnetic field 6.5 T with its plane…

A: Magnetic flux linkage through a coil is ϕ=NBAcosθ where N is the number of loops in the coil,B is…

Q: The figure below shows a top view of a bar that can slide on two frictionless rails. The resistor is…

A: Given,

Q: The slide generator in the figure below is in a uniform magnetic field of magnitude 0.0500 T. The…

A:

Q: A conducting rod with a length of 27.0 cm is placed on a U-shaped metal wire that includes a light…

A: Given :       Length of the rod, L = 27 cm  = 27×10-2 m      Resistance of the bulb, R = 80 Ω…

Q: The figure below shows a top view of a bar that can slide on two frictionless rails. The resistor is…

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

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.