A conducting rod slides down between two frictionless vertical copper tracks at a constant speed of 4.2 m/s perpendicular to a 0.57-T magnetic field. The resistance of the rod and tracks is negligible. The rod maintains electrical contact with the tracks at all times and has a length of 1.9 m. A 0.74-Ω resistor is attached between the tops of the tracks. (a) What is the mass of the rod? (b) Find the change in the gravitational potential energy that occurs in a time of 0.24 s. (c) Find the electrical energy dissipated in the resistor in 0.24 s.

Q: Problem 4: A conducting rod spans a gap of length L = 0.179 m and acts as the fourth side of a…

A: Given:-  L = 0.179 mB = 0.45 TA = 6.5 m/s4R = 150 Ω  Find:-  g) Express the current induced in the…

Q: Problem 4: A conducting rod spans a gap of length L = 0.179 m and acts as the fourth side of a…

A: aϕ = BxL b a = At2dVdt = At2 ⇒dV = At2dtIntegrate both sides,∫dV = ∫At2 dtV = At33

Q: The flexible loop in Figure has a radius of 23 cm and is in a magnetic field of magnitude 0.150 T.…

A: Please see the answer in Step 2

Q: A ring rotates around the Y-axis in a magnetic field B=b0sinwt ax Wb/m2. The voltage induced in the…

A: when ring rotates then the flux through ring vary which can cause the flux to change due to which an…

Q: Figure shows three situations in which a wire loop lies partially in a magnetic field. The magnitude…

A:

Q: Multiple-Concept Example 2 discusses the concepts that are used in this problem. In the drawing the…

A: Given: The magnitude of the magnetic field: B = 1.01 T. The length of the rod: L = 0.939 m. The…

Q: Problem 4: A conducting rod spans a gap of length L = 0.179 m and acts as the fourth side of a…

A: Given, L= 0.175 m B = 0.45 T A = 6.5 m/s2 R = 150 ohms

Q: The flexible loop in Figure has a radius of 43.4 cm and is in a magnetic field of magnitude 0.150 T.…

A:

Q: A 100-turn square coil of side 20.0 cm rotates about a vertical axis at 4.3 x103 rev/min as…

A:

Q: A conducting rod of length = 65.0 cm is free to slide on two parallel conducting bars as shown in…

A: It is given that, l=65 cm=0.65 mR1=6 ΩR2=9 ΩB=10 Tv=4 m/s

Q: A 0.31 m long and 0.31 m wide loop is moved at a constant velocity of 0.87 m/s into a perpendicular…

A: The width of the loop w=0.31 m The velocity of the loop v=0.87 m/s The magnetic field B=0.73 T The…

Q: A rod of mass m = 0.6 kg rests on two parallel metal rails that are a distance L = 0.1 m apart. The…

A:

Q: The drawing shows that a uniform magnetic field is directed perpendicularly into the plane of the…

A:

Q: Problem 3: A rod AB with length L= 0.115 m is lying on a rectangular conducting loop of zero…

A:

Q: A bar of length L = 24cm is free to slide without friction on horizontal rails. There is a uniform…

A: Step1    . Length of bar  L=24cm=0.24m     .Uniform magnetic field,  B=2T     .Emf of battery,…

Q: Problem 8: A conducting rod of length L = 0.085 m is lying on a rectangular wire as shown in the…

A: a)The expression for the magnetic flux,

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: The flexible loop in Figure has a radius of 43.4 cm and is in a magnetic field of magnitude 0.150 T.…

A:

Q: An electric current of 2.5 A circulates through the conductor in the figure. The curved parts are…

A:

Q: 4. A cylindrical ingot moves to the left at a constant speed (v) equal to 40.0 centimeters per…

A:

Q: A conducting rod of length 40.0 cm is free to slide on two parallel conducting bars. A resistor…

A: Length of the wire L=40 cm=0.4 m Resistance of the resistor R=5.0Ω Magnetic field B=2.50 T Velocity…

Q: The current through the windings of a solenoid with n = 2000 turns per meter is changing at a rate…

A: The given values are,

Q: 1.0 E0.5 2.0 4.0 6.0 8.0 1(s) 1 (s) The graph shows the changes with time of a magnetic field…

A: Given : Radius of a wire (r) = 12 cm = 0.12 m

Q: A straight conductor of length l moves with an acceleration a = 0.1 ms−2 at right angles to a…

A: The given data are: a=0.1 m/s2B=10 TV=5 Vt=20 s Here, a denotes the acceleration, V denotes the emf,…

Q: The figure shows a rod of length L = 8.84 cm that is forced to move at constant speed v = 4.19 m/s…

A: Hello. Since your question has multiple sub-parts, we will solve the first three sub-parts for you.…

Q: A conducting rod with length L = 21.5 cm is being pulled along a long rotated U-shape conductor,…

A: Solution,  Given that ,  A conducting rod length l is 21.5cm = 0.215 m Magnetic field is B= 31.2 mT,…

Q: The figure shows a rod of length L 8.84 cm that is forced to move at constant speed v 4.19 m/s along…

A: Given : Length of the rod. L = 8.84 cm = 0.0884 m Speed of the rod, v = 4.19 m/s Resistance of the…

Q: Multiple-Concept Example 2 discusses the concepts that are used in this problem. In the drawing the…

A:

Q: The flexible loop in Figure has a radius of 25.5 cm and is in a magnetic field of magnitude 0.150 T.…

A: r

Q: Problem 8: A circular wire loop of radius r = 0.15 m and resistance R = 8.5 Q rotates about a shaft…

A:

Q: A toroidal solenoid consists of N = 120 windings of wire each carrying current I = 0.135 A. The…

A:

Q: The flexible loop in Figure has a radius of 34.5 cm and is in a magnetic field of magnitude 0.150 T.…

A:

Q: A 100-turn square coil of side 20.0 cm rotates about a vertical axis at 4.6 x103 rev/min as…

A:

Q: In a region of space where the magnetic field of the earth has a magnitude of 80 mT and is directed…

A:

Q: 67. Figure P31.67 shows a stationary conductor whose magnetic field of 0.500T directed out of the…

A:

Q: A conducting rod of length ℓ = 35.0 cm is free to slide on two parallel conducting bars as shown in…

A: Given- Length of rod (l) = 35 cm = 0.35 m , Resistance (R1) = 2 Ω Resistance (R1) = 5 Ω Magnetic…

Q: Multiple-Concept Example 2 discusses the concepts that are used in this problem. In the drawing the…

A:

Q: A 100-turn square coil of side 20.0 cm rotates about a vertical axis at 5.9 ×10 rad/min as indicated…

A: (given) Number of turns in the coil = 100               Side of square coil = 20 cm…

Q: 1.1- mm long rod rotates about an axis through one end and perpendicular to the rod, with an angular…

A:

Q: A metal disk 13.0 cm in diameter rotates about its circular axis of symmetry at an angular speed of…

A: so induced emf, v=-dϕdt=-BdAdtnow, A=πr2so,dAdt=πr2ω2πso,absolute voltage, v=Br2ω2

Q: A loop of wire sits in an external magnetic field as shown (in other words, the field shown in the…

A:

Q: A conducting rod of length l= 35.0 cm is free to slide on two parallel conducting bars as shown in…

A: Given : Length of a conducting rod (ℓ) = 35 cm = 0.35 m Resistor , R1 = 2.00 Ω  Resistor , R2 = 5.00…

Q: 1. Loop moving into a Constant Magnetic Field. Consider a square loop with side length 1m moving at…

A:

Q: A 2.80-m length of wire is held in an east-west direction and moves horizontally to the north with a…

A:

Q: 6. A loop of a wire has the shape shown in the drawing. The top part of the wire is bent into a…

A:

Q: A single loop of wire encloses an area of 3.5x10-² m². It is in a magnetic field that changes from…

A:

Q: Q2 A conducting rod of length l= 35 cm is free to slide on two parallel conducting bars as shown in…

A: Since the rod is pulled towards the left, the area of loop on left side is decreasing, thus the flux…

Electromagnets

The word "electromagnet" is composed of two words, ‘electro’ and ‘magnet’. It is a type of magnet in which an electric current helps in the generation of a magnetic field. Electromagnets usually consist of two major parts, wire and a coil around which the wire is wound. This is called a solenoid. When an electric current is allowed to pass through the coiled wire, the electric current produces a magnetic field. This magnetic field is present only when current is passing through the wire.