A 140-turn circular coil has diameter 4.5 cm. A magnetic field perpendicular to the coil is changing at 0.80 T/s.  What is the induced emf in the coil?  The symbology is what is killing me.  I don't understand the logic steps or where you have to substitute values to determiine the emf.

Q: 6. A 10 cm long rod is placed on two parallel rails so that it completes a loop. This device is…

A:

Q: 1. A loop conductor of area 1.0 m² is positioned perpendicular to a uniform 1.5 T magnetic field. a.…

A: Initial area of loop, A1=1 m2 Magnetic field intensity, B=1.5 T Final area of loop, A2=1.5 m2 Time…

Q: The coil in a 60-Hz ac generator has an area of 3.0 x 10^-2m^2 and is rotated in a 0.12 T magnetic…

A:

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 Generator Bike. You and your team are designing a generator using a stationary bike to rotate a…

A: The peak emf (ε) produced by the generator bike can be calculated using Faraday's law of…

Q: A square loop of side a lies on the a - y plane as shown in the figure. There exists a magnetic…

A: Answer  option(g) a3t

Q: A dc motor with its rotor and field coils connected in series has an internal resistance of 3.2 Q.…

A: Given that:-Internal resistance of the DC motor, r=3.20ΩVoltage of the line, Vab=120 VBack emf,…

Q: 3. A wire is moving on frictionless rails in a uniform magnetic field, as shown to the right. The…

A: We have a wire of length L=5 cm=0.05 m which is moving along a rail experiencing a magnetic field of…

Q: 4. A 10-cm-by-10-cm square loop lies in the ry-plane. The magnetic field in this region of space is…

A:

Q: square wire loop is held in a uniform 4 T magnetic field directed perpendicular to the plane of the…

A:

Q: large power plant generates electricity at 12.0 kV. Its old transformer once converted the voltage…

A:

Q: . A segment of wire 5.3 cm long is moving at a velocity of 6.68 m/s toward a parallel (much longer)…

A: Given Data:The length of the wire is The velocity of the wire segment is The current in the wire is…

Q: 36. A solenoid of length 0.75 m has a radius 0.092 m. A current of 25 A flows through its 4 700…

A:

Q: If an alternator coil is 13 cm in diameter and is spinning at 1150 revolutions per minute in a 0.13…

A: Using Faraday’s law, the emf induced is,

Q: A 3.0-cm by 5.0-cm rectangular coil has 100 turns. Its axis makes an angle of 55º with a uniform…

A:

Q: Self-inductance. A coil has a self-inductance of 50 [H] and a resistance of 3.5 [2]. It is connected…

A: Given  Self inductance L = 50 uH Resistance  R = 3.5 ohm Internal resistance of battery r = 0.25 ohm…

Q: Consider a transformer, used to recharge rechargeable flashlight batteries, that has 500 turns in…

A: Given: The turns in the primary coil is 500. The turns in the secondary coil is 7. The input voltage…

Q: 16. The magnetic flux through three different coils is changing as shown in Figure P21.160. For each…

A:

Q: 17. The magnetic flux through three different coils is changing as shown in Figure P21.17. For each…

A:

Q: The figure shows a 10-cm-diameter loop in three different magnetic fields. The loop's resistance is…

A: The diameter of the loop is The resistance of the loop is The rate of change of the magnetic field…

Q: An American traveler in China carries a transformer to convert China's standard 220 V to 120 V so…

A:

Q: 3. A strong electromagnet produces a uniform magnetic field of 1.60 T over a cross- sectional area…

A:

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: 6. A rod slides along conducting rails which are connected to a resistor (R=2 N). The length of the…

A: a) value of induced emf = 4.35V b) magnitude of induced current = 2.175 A and direction is…

Q: of the following statements are true? Choose all that apply. changing magnetic field will always…

A: There are statements given. We need to Choose true statements.

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: An N= 1,246-turn conducting loop with an area of A = 0.112 m² rotates in a uniform magnetic field so…

A:

Q: A car generator turns at 390 rpm when the engine is idling. Its 296-turn, 5.04 cm by 7.99 cm…

A: Given that,Number of turns : N = 296 (turs)Generator : 390 (rpm)Rectangular coil : a = 5.04 (cm) , b…

Q: A circular loop with a radius of 2.5 m rests horizontally inside a uniform magnetic field of 0.9 T…

A:

Q: starting with the normal of the plane of the coil perpendicular to the field. Assume that the…

A: Induced emf in any generator E = Eo sinwt Where Eo = peak emf = NABW W = angular speed B= magnetic…

Q: Assume that the magnet has a magnetic moment of μ = 0.39 A. m². The magnet is moving toward the coil…

A: Note: Since you have posted a question with multiple sub-parts, we will solve the first three…

Q: A car generator turns at 390 rpm when the engine is idling. It's 296-turn, 5.04 cm by 7.99 cm…

A: Solution:-Given thatSpeed of car generator (N)=390 rpmNumber of turns (n)=296Lenght of rectangular…

Q: A bicycle generator rotates at 1500 rad/s, producing an 21.0 V peak emf. It has a 1.30 by 3.50 cm…

A: We have Length of the rectangular coil, L=1.30×10-2m The breadth of the coil, B=3.50×10-2m E0=21.0V…

Q: A 5.00 [cm] long solenoidal inductor has 50 turns and radius of 3.00 [cm]. If the current varies at…

A:

Q: in the figure below, a square loop with 10 turns that is 10.0 cm on a side has a magnetic field…

A:

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: Two coils are placed close together in a physics lab to demonstrate Faraday's law of induction. A…

A:

Q: A 500-turn coil of area 0.00200 m^2 is rotated in a 2.00 T magnetic field. At what frequency, f,…

A: When coil rotated in a magnetic field, Flux linked with the coil at time 't' ; a) ϕ=NBA cosωt…

Q: O8 https://www.webassign.net/web/Student/Assignment-Responses/submit?dep-32014984&tags-autosave#Q4 ☆…

A:

Q: A large power plant generates electricity at 12.0 kV. Its old transformer once converted the voltage…

A: We know that in a transformer:Transformation ratio r=VoutVin=NSNP ≡Voltage outVoltage in=Turns on…

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.