QUESTION 6 Figure 3 shows a conducting bar PQ that can slide freely over two conducting rails. The length of the bar is 75 cm. Calculate the induced voltage in the bar 50 cm Figure 3 a) att 10 ms when the bar is stationed at y = 30 cm and B = 4t2 az T. b) if the bar slides at a velocity u = 2 ay m s' and B = 4 az T.

Q: An air-core solenoid with 64 turns is 8.00 cm long and has a diameter of 1.20 cm. When the solenoid…

A: L=μ0N2AL    =μ0N2πd24L=4π×10-7  H/m6423.141.20 cm1 m100 cm248 cm1 m100 cm=72.7×10-7 H1 μH10-6…

Q: Suppose the 50 turn coil in the figure below lies in the plane of the page and originally has an…

A: Given:no of turns, n = 50Initial area, Ai = 0.270 m2Final are, Af = 0 m2Time taken, t = 0.1…

Q: = A coil with a 10.800 cm and b = 13.000 cm is in the same plane with a long straight wire. The…

A:

Q: A magnetic B field of strength 0.9 T is perpendicular to a loop with an area of 4 m². If the area of…

A: Given data The magnitude of the magnetic field is B = 0.9 T The area of the loop initially is A1 = 4…

Q: a square loop in the plane of the screen lies in a 0.55T constant magnetic field pointing out out…

A:

Q: 820 winding wire coil with resistance of 24 n wrapped around a 7 cm long solenoid with 12500…

A:

Q: A air-filed solenoid 3.3 m diameter and length 23 cm, has 100 turns. If the current increases from 9…

A: (a) Let d denotes the solenoid’s diameter, A denotes the area, l denotes the solenoid’s length, N…

Q: As shown in the figure, the wire is of uniform thickness, the current passing through is 5A, the…

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Q: A long solenoid with a circular cross section has n turns per unit length and radius R The current…

A:

Q: A coil of 1000 turns encloses an area of 25 cm2 and is in a magnetic field of strength 3e-6 T which…

A: Number of turns (N) =1000 Area (A) = 25 cm2  B1 = 36e-6 T  B2 = 0 T  ∆t = 0.5 min = 30 sec  (half a…

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Q: Shown in the figure below is a generator being used to power a resistor. The generator consists of a…

A: Step 1:

Q: ESS 2 2 SE 16 s SES-ES ESESESES STA ES STA ES STA ES Arod AB with length L ellism is lying on a…

A: (a)Write the expression for total induced emf across the rod AB.

Q: At what speed (in meters per second) must the sliding rod in the figure below move to produce an emf…

A:

Q: Considerable scientific work is currently under way todetermine whether weak oscillating magnetic…

A: Calculate the maximum emf as follows,

Q: A straight infinite current-carrying wire is bent into the form shown in the Figure. The curve is a…

A:

Q: A circular wire coil with 28 turns and radius 3.92 cm is placed in a uniform magnetic field of…

A:

Q: by how much is the maxium electromotive force produced by a generator changfe if its angular…

A: To determine: The correct option.

Q: A 29 cm circunference loop of wire has a resistance of 0 19 $2 The loop is placed between the poles…

A: Circumference of loop 2πr = 29 cm  Therefore, radius of loop r = 29 cm / ( 2 * 3.14 ) = 4.618 cm =…

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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.