The square loop in Figure P20.62 is made of wires with a total series resistance of 10.0 Ω. It is placed in a uniform 0.100-T magnetic field directed perpendicular into the plane of the paper. The loop, which is hinged at each corner, is pulled as shown until the separation between points A and B is 3.00 m. If this process takes 0.100 s, what is the average current generated in the loop? What is the direction of the current?

Q: The flexible loop in the figure below has a radius of 10 cm and is in a magnetic field of strength…

A: radius, r = 10 cm  magnetic field, B = 0.19 T  time, t = 0.19 s radius, r = 10 cm radius, r = 10 cm…

Q: A coil has an area of 100 cm² with 300 turns connected across a 5.00 Q resistor to form a closed…

A: Let B1 and B2 denote the initial and final magnetic field, A denotes the area, N denotes the number…

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 coil has an area of 100 cm2 with 220 turns connected across a 5.00 Q resistor to form a closed…

A: Given, Area of coil A = 100 cm2 = 0.01 m2 Number of turns N = 220 Resistor R = 5 Ω Magnetic field B…

Q: The figure below shows a flexible loop of metal wire with a radius of 10.0 cm. It lies in a magnetic…

A: Given- The radius of the loop R = 10 cm=0.1 m So, Area of the loop A=πR2=3.14×0.12=0.0314 m2…

Q: A square, single-turn wire loop ℓ = 1.00 cm on a side is placed inside a solenoid that has a…

A:

Q: The figure attached shows a resistor that is connected in a circuit consisting of a circular loop…

A:

Q: A coil has an area of 100 cm2 with 222 turns connected across a 5.00 0 resistor to form a closed…

A: Write a given values of this question.

Q: 9. A bar of mass m and resistance R slides without friction in a horizontal plane, moving on…

A:

Q: An N-turn square coil with side l and resistance R ispulled to the right at constant speed v in the…

A:

Q: A coil has an area of 100 cm2 with 198 turns connected across a 5.00 Q resistor to form a closed…

A: The expression for the induced emf is written as, Here, N, Δφ and Δt represent the number of turns…

Q: The flexible loop in Figure P20.10 has a radius of 12 cm and is in a magnetic field of strength 0.15…

A: Given:  radius, r = 12 cm = 0.12 m  magnetic field, B = 0.15 T  t = 0.2 s

Q: *Chapter 30, Problem 021 In the figure, a stiff wire bent into a semicircle of radius a = 2.7 cm is…

A:

Q: A B

A:

Q: A square coil of wire of side 2.80 cm is placed in a uniform magnetic field of magnitude 1.25 T…

A: Given: side, a = 2.8 cm  magnetic field, B = 1.25 T  number of turns, N = 28  Resistance, R = 0.780…

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: We have to find the rate at which the force works on the rod. So this means that we have to find the…

Q: The figure below shows a flexible loop of metal wire with a radius of 15.0 cm. It lies in a magnetic…

A: Given Data : The radius of the ring is given as r=15cm×1m100cm=0.15m The magnetic field is given as…

Q: Consider the system pictured in Figure P19.21. A 15-cm length of conductor of mass 15 g, free to…

A:

Q: A 100-turn square wire coil of area 0.040 m2 rotates about a vertical axis at 1 500 rev/min, as…

A:

Q: Magnetic field values are often determined by using a device known as a search coil. This technique…

A: The emf induced in the coil is given by, Where N is the number turns in the coil and (Φ2 - Φ1) is…

Q: A square coil of wire of side 2.55 cm is placed in a uniform magnetic field of magnitude 1.75 T…

A:

Q: Figure P20.29 shows a bar of mass m = 0.200 kg that can slide without friction on a pair of rails…

A: It is given that,

Q: Consider the arrangement shown in Figure P20.30. Assume R = 6.00 V, ℓ = 1.20 m, and a uniform 2.50-T…

A:

Q: A circular loop of wire of resistance R = 0.500 V and radius r = 8.00 cm is in a uniform magnetic…

A:

Q: The figure below shows a flexible loop of metal wire with a radius of 10.0 cm. It lies in a magnetic…

A:

Q: A rectangular metal loop with 0.050Ω resistance is placed next to one wire of the RC circuit shown…

A:

Q: A bar of mass m and resistance R slides without friction in a horizontal plane, moving on parallel…

A: Given data: Mass of bar =m  Resistance in bar =R, Distance between the rails =d.

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: The flexible loop in the figure below has a radius of 13 cm and is in a magnetic field of strength…

A:

Q: The figure below shows a flexible loop of metal wire with a radius of 13.0 cm. It lies in a magnetic…

A: Write a given value of this question. r=13cm=0.13mB=0.140Tdt=0.240sθ=0°

Q: A metal bar of length L = 2.8 m slides along two horizontal metal rails as shown in the figure…

A:

Q: A square coil of wire of side 3.90 cm is placed in a uniform magnetic field of magnitude 2.25 T…

A:

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

A:

Q: (9) A conducting rod of length l= 25 cm is placed on a U-shaped metal wire that is connected to a…

A: Given  length(l)=0.25 m resistance (R)=8.0 ohms magnetic field (B)=0.40 T speed (v)=6.0 m/s Required…

Q: The figure below shows a flexible loop of metal wire with a radius of 15.0 cm. It lies in a magnetic…

A:

Q: A coil has an area of 100 cm2 with 282 turns connected across a 5.00 Q resistor to form a closed…

A:

Q: The bolt of lightning depicted in Figure P20.61 passes 200. mfrom a 100-turn coil oriented as shown.…

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.