The flexible loop in the figure below has a radius of 13 cm and is in a magnetic field of strength 0.14 T. The loop is grasped at points A and B and stretched until its area is nearly zero. If it takes 0.23 s to close the loop, what is the magnitude of the average induced emf (in mV) in it during this time?

Q: The flexible loop in Figure has a radius of 32.1 cm and is in a magnetic field of magnitude 0.150 T.…

A:

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: The flexible loop in the figure below has a radius of 15 cm and is in a magnetic field of strength…

A: It is given that

Q: The magnetic flux through the loop shown in the figure below increases according to the relation ΦB…

A: Magnitude of E.m.f is given by following formula: E=dϕBdt Magnetic flux is given as follows:…

Q: A rectangular wire loop with length a and width b lies in the xy-plane, as shown below. Within the…

A: Given: A rectangular wire loop with length a and width b lies in the xy-plane, as shown below,

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: The flexible loop in the figure below has a radius of 15 cm and is in a magnetic field of strength…

A:

Q: A flexible loop has a radius of 12.0 cm and is in a magnetic field of magnitude 0.150 T. The loop is…

A: Given data The radius of the flexible loop is: R = 12 cm = 0.12 m The magnitude of the magnetic…

Q: Square loop of copper wire- ks = side length ххх х х х X x x xBx Above this line: B uniform and…

A: The weight of the loop (gravitational force) is pulling  down on this loop. It is so because the…

Q: The magnetic flux through a coil is changing as shown in the figure below. At which times (indicated…

A: We know that, induced current is directly proportional to rate of change of magnetic flux.

Q: Refer to the attached figure. A loop of wire sits in a uniform magnetic field, everywhere pointing…

A:

Q: A 20.9 turn conductive loop encloses an area of 0.57 m2. At what constant rate should the magnetic…

A: Given:-             A 20.9 turn conductive loop encloses an area = 0.57 m2.…

Q: A 490-turn solenoid, 30 cm long, has a diameter of 3.5 cm. A 15-turn coil is wound tightly around…

A: Initially, the current in the solenoid is zero. Therefore, the initial magnetic field will be zero.…

Q: A loop of copper wire is placed in a magnetic field B with its plane at right angles to the field.…

A: According to Lenz's law, the induced emf generates a current, which creates a magnetic field that…

Q: A thin conducting rod of length b is rotated with constant angular speed w on a borizoutal circular…

A:

Q: ne flexible loop in Figure has a radius of 46.1 cm and is in a magnetic field of magnitude 0.150 T.…

A: Given:-  the radius of the loop r = 46.1 cm The magnetic field B = 0.150 T t= 0.2 sec  Find:- The…

Q: Consider a wire loop of area A = 1m? initially far from any sources of magnetic field. A strong bar…

A: Given, Area(A)=1m² Magnetic field (B)=1T Time(T)=0.1s Induced emf(E)=?

Q: A B

A:

Q: The flexible loop in Figure has a radius of 32.1 cm and is in a magnetic field of magnitude 0.150 T.…

A: Magnitude of magnetic field= 0.15T Radius of ring, r = 0.321 Meter Given time= 0.2 sec

Q: long piece of wire is bent into a rectangular loop and placed on a table top in the horizontal…

A:

Q: The flexible loop in the figure below has a radius of 11.0 cm and is in a magnetic field of…

A:

Q: A long, straight solenoid with a cross-sectional area of 8.00 cm2 is wound with 90 turns of wire per…

A: Expression for magnetic field -  B=μoni .....(1) Where,  μo=4π×10-7 N.A-2 Given values-  n=90 per cm…

Q: The flexible loop in Figure has a radius of 34.8 cm and is in a magnetic field of magnitude 0.150 T.…

A: Given data: The radius of the circular loop is, r= 34.8 cm The magnitude of the magnetic field is,…

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: The magnetic field through a single loop of wire, 12 cm in radius and of 8.5 ohms resistance changes…

A: Emf = The rate of change of magnetic flux  Emf = d∅ / dt  Where ϕ = magnetic flux = BA B = magnetic…

Q: A long solenoid of radius r = 1.85 cm is wound with 4.50 ✕ 103 turns/m and carries a current that…

A:

Q: The flexible loop in the figure below has a radius of 11 cm and is in a magnetic field of strength…

A: Given: radius of the loop, r = 11 cm = 0.11 m  magnetic field strength, B = 0.19 T time taken, ΔT =…

Q: A 460-loop circular armature coil with a diameter of 7.0 cm rotates at 170 rev/s in a uniform…

A: The equation for the rms output voltage of an electric generator is given by

Q: A loop is pulled with a force F to the right to maintain a constant speed of 8.0 m/s. The loop has a…

A: speed (v) = 8 mslength = 0.15 m width = 0.08 m resistance = 200 ohm magnetic field = 1.2 T

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: 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 circular loop of wire of radius 13.0 cm is placed in a magnetic field directed perpendicular to…

A:

Q: The flexible loop in Figure has a radius of 52.6 cm and is in a magnetic field of magnitude 0.150 T.…

A: Given  Radius =r = 52.6 cm  Magnetic field=B= 0.150 T  Time = t = 0.2 sec  So A1 = πr² = 0.8687 m²…

Q: A 40 turn conductive loop encloses an area of 0.55 m?. At what constant rate should the magnetic…

A:

Q: The image below shows a simple version of an alternator which is a system that can produce an emf.…

A:

Q: A long solenoid of radius r = 1.60 cm is wound with 4.00 ✕ 103 turns/m and carries a current that…

A:

Q: A 2-turn planer loop of flexible wire is placed inside a long solenoid of n turns per meter that…

A: The emf induced in the loop. given,no. of turns per unit length(n)=500 m-1maximum Current(Io)=20…

Q: The figure below shows a flexible loop of metal wire with a radius of 14.0 cm. It lies in a magnetic…

A: The flux associated with the conductor having area of cross section A is ϕ=B.A…

Q: 20.2  The flexible loop in the figure below has a radius of 15 cm and is in a magnetic field of…

A: The radius of the loop,

Q: The image below shows a simple version of an alternator which is a system that can produce an emf.…

A:

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.