Consider the arrangement shown below. (a) Assume R = 5Ʊ , ,ℓ = 25cm, and a uniform 2.30T magnetic field directing into the page. At what speed should the bar be moved to produce a current of 0.200A in the resistor? (b) In which direction does the current flow through the resistor (up or down)?

Q: As shown in the figure, a uniform conducting rod of length 0.35 m and mass 0.075 kg is in rotational…

A: Given:-       Length of the rod l=0.35m       Mass of the rod m=0.075 kg       magnetic…

Q: . A rod of length 1 is rotated with angular speed o about its one end perpendicular to a magnetic…

A: We need to compute-Induced emf e=?The data given as-Length of rod=lAngular speed=ωMagnetic field=B

Q: A conducting crossbar is in electrical contact with two vertical conducting wires and slides down…

A: The current flow through the resistance is,

Q: The magnetic flux through the loop shown in the accompanying figure varies with time according to -…

A: Given, Flux, ϕm=9e-3tsin170πt×10-3wb Resistor, R=5Ω Induced emf, ε=-dϕmdt…

Q: what is the magnitude of the torque and magnetic potential energy acting on wire about an axis on…

A:

Q: Consider a loop with 50 square turns that is 11 cm on a side and is in a uniform 0.75 T magnetic…

A: Given: The number of turns in the square loop is N = 50 The side length of the square turn is a = 11…

Q: A pair of parallel conducting rails that are separated by a distance d-0.2 m lies at a right angle…

A: Given:Distance between the conducting rails: d=0.2 mMagnetic field: B=0.8 TResistance of the…

Q: For a square loop which has 50 turns that are 20 cm on a side, placed in a uniform magnetic field of…

A:

Q: The rod ab of resistance 3.50 Ω shown in the figure makes contact with U-shapedmetal rails of…

A: According to company policy, first three parts will only be answered here. Please post the rest…

Q: A rectangular coil consists of N = 100 closely wrapped turns andhasdimensions a = 0.400 m and b =…

A:

Q: Anupright rectangular loop of height a and width b has a lightbulb attached to it, with some…

A: We are given magnetic field. We are given dimensions of rectangular loop. The loop is…

Q: The current through a circular wire loop of radius 10 cm is 5.0 A. (a) Calculate the magnetic dipole…

A: a) The required magnetic dipole moment of the loop is, b) The required torque is,

Q: How does the magnitude of the magnetic field along the axis of the coil depend on the distance from…

A: In a current carrying coil, the magnetic field inside the coil is given by B = μonI where, n =…

Q: A horizontal straight wire 10 m long extending from east to west is falling with a speed of 5.0 m…

A: Given : Wire’s Length, l = 10 m Speed of the wire with which it is falling, v = 5.0 m/s Strength of…

Q: A 0.250-m-long bar moves on parallel rails that are connectedthrough a 6.00 Ω resistor, as shown in…

A: Given: A 0.250-m-long bar moves on parallel rails that are connected through a 6.00 Ω resistor. The…

Q: Consider a coil consisting of 250 turns enclosing an area of 15 cm?. This coil is rotated in 0.045 s…

A:

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

A: Given,

Q: 5) A metal bar with length L= 0.50 m, mass m = 80 gram, and resistance R = 5 N is placed on fri…

A:

Q: Find the flux of Earth's magnetic field of magnitude 5.00 x 10 -5 T through a square loop of area…

A:

Q: The magnitude of the applied magnetic field in an MRI machine is 2.20 T at the patient's head. The…

A: Given data- dBdh=0.05 T/mat the head, B=2.20 TLarmor frequency is given by,f=e4πmBwhere,B=magnetic…

Q: Cônsidér thé árrangement shown the figure belów. Assumé R = 4.00 and ? = 1.10 m, and a uniform…

A: Time varying magnetic fields produces a induced EMF which in turn produces current. This EMF depends…

Q: As shown, a square loop of wire, with a mass of 200 g, is free to pivot about a horizontal axis…

A:

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

A: Given, Resistance=5.2ohm Magnetic field=2.5T Length=1.20m Velocity=1.7m/s

Q: Consider a rectangular loopof wire 6.8 cm by 9.2 cm in a uniform magnetic field of magnitude1.7 T.…

A: Given data: The one side of the rectangular loop is a=6.8 cm. The another side of the rectangular…

Q: Consider the arrangement shown in the figure below where R = 7.50 Q, l = 1.10 m, and B = 3.00 T. * x…

A:

Q: A conducting bar of length e moves to the right on two frictionless rails as shown in the figure…

A: # NOTE: Thank you for the question. As per the company honor code, we are allowed to answer up to…

Q: A square coil of resistance 3Ω, 70 turns and side length 5cm is placed with its plane making an…

A: Here, we use the induced emf formula to calculate thu current induced in the coil.

Q: 1) A 375-turns square loop of 34 cm on a side, carrying a current of 22 A creates a torque of 265 N…

A: As per guideline we are suppose to do only 1 question from multiple unrelated questions. So kindly…

Q: An electric wire in the wall carries a DC current of 25A vertically upward. What is the Magnetic…

A: Current (I) = 25 A Distance (d) = 10 × 10-2 m uo = free space permeability uo = 4π × 10-7

Q: A circular coil of wire is composed of 600 turns, has a diameter of 30 cm, and with a 25 mA current…

A:

Q: (a) A lightning bolt produces a rapidly varying magnetic field. If the bolt strikes the earth…

A: (a)

Q: A conducting bar moves along frictionless conducting rails connected to a 4.00-0 resistor as shown…

A:

Q: onducting bar of length { moves to the right on two frictionless rails as shown in the figure below.…

A:

Q: A rectangular conducting loop with dimensions w- 42.0 cm and h- 80.0 cm is placed a distance a- 5.00…

A:

Q: A horizontal straight wire 10 m long extending from east to west iIs falling with a speed of 5.0 m…

A: Given data- Length of the wire, l=10 m Falling speed of the wire, v=5 m/s Magnetic field strength,…

Q: A circular current loop (with only one turn) has a radius of 4.82 cm and a current of 0.416 A runs…

A: The relation for the potential energy of a current loop when it is placed in a magnetic field is…

Q: Find the e.m.f of the battery

A: Given; A copper wire having;  Resistance =0.01 ohmIn each metre is used to wind a 400 turn solenoid…

Q: What is the speed of a supersonic aircraft with a 17.0 m wingspan, if it experiences a 1.80 V Hall…

A: Given, Hall Voltage (E)=1.80V Length (L)=17m Magnetic field (B)=8.70×10^-5 tesla Speed=?

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.