The current in a coil changes steadily from 1.3 A to 2.5 A in the opposite direction, in 0.12 s. The average emf induced in the coil is 32.0 mV. a) Draw a clear physics diagram, including currents, etc. b) What is the inductance of the coil?

Q: 4) A long solenoid has n=900 turns per meter and a current I = 3.2 sin(wt). Inside the solenoid with…

A: wavelength, ƛ = 50 m  Period , T = 4 s

Q: A generator rotates at 85 Hz in a magnetic field of 0.030 T. It has 950 turns and produces an rms…

A:

Q: 5. The graph below shows the magnetic field strength through a circular loop of radius 15.0 cm as a…

A:

Q: In a model AC generator, a 495 turn rectangular coil 10.0 cm by 23 cm rotates at 123 rev/min in a…

A: Given that the value of the number of turns and area and angular velocity and also given the value…

Q: The maximum value of the emf in the primary coil (Np = 1600) of a transformer is 215 V. (a) What is…

A: Given that:- Vp=215 volt  Np=1600 Ns=350

Q: An emf of 0.50 V is induced across a coil when the current through it changes uniformly from 0.20 A…

A: solution is given by

Q: 1. A flat coil of wire (0.1m by 0.2m) has 50 turns. At t=0, the coil is perpendicular to a magnetic…

A:

Q: A 60 loop circular coil has a diameter of 8cm. It is oriented so that the field lines of an applied…

A:

Q: A closely wound rectangular coil of 90 turns has dimensions of 21.0 cm by 50.0 cm . The plane of the…

A: Solution: Given: n = number of turns of wire in coil = 90 b = breadth of coil = 21.0 cm = 0.210 m w…

Q: 4. A coil with 20 turns of wire is wrapped on a frame with a square cross section 2.50 cm on a side.…

A: The induced emf is equal to the ratio of change in flux with respect to time. ε=Nϕf-ϕit…

Q: A transformer inside the power supply for a portable CD player has 500 turns in the primary coil and…

A:

Q: steadily from 1.3A to 2.5A in the opposite direction,in 0.12 s. The average emf induced in the coil…

A:

Q: 1. In an AC generator, a coil with N turns of wire spins in a magnetic field. Of the following…

A: We know that emf generated in coil is given by  ε=NBAω

Q: A 73 loops coil of wire 0.3m x 0.2m that has a magnetic field increases from -3T to 5T in 0.15s that…

A: No.of turns of coil, N = 73 loops Area of the coil, A = 0.3×0.2 = 0.06 m2 Initial magnetic field, B1…

Q: The current passing through a 0.40-H coil increases from 2.0-A ti 10.0-A in 0.12 s. (a) Calculate…

A:

Q: 1. A wire is wound around a square frame 0.60 m to form a coil with 12 turns. The frame is oriented…

A: The formula for the magnetic flux is: From Faraday’s the formula for the induced emf is:

Q: The current passing through a 0.40-H coil increases from 2.0 A to 10.0 A in 0.12 s. (a) Calculate…

A:

Q: If you want to use a step-up transformer to convert 5V DC to 10V DC, what turn ratio would you need?…

A: Transformer work on  the principal of mutual induction between two coil (primary and secondary).…

Q: 15. A square loop in the plane of the screen lies in a 0.550 T constant magnetic field pointing out…

A: Here given a square loop in a magnetic field 0.550 T. The side changes from 8 cm to 22 cm in 0.250…

Q: A transformer has an input voltage amplitude of 200 V and an input power of - W. The primary side…

A:

Q: The average magnetic field inside a flat coil of area A with N turns around which a current i flows…

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Q: Two coils close to each other have a mutual inductance of 23 mH. The current in one coil decays…

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Q: A 40-turn, 4.0-cm-diameter coil with R= 0.402 surrounds a 3.0-cm-diameter solenoid. The solenoid is…

A:

Q: A generator has a 130-turn square coil, 6 cm on a side. Find the peak emf in this coil when it's…

A:

Q: Two coils of wire are placed next to each other. The current in the first coil increased from 0 to…

A: Given : Current in first coil increases from 0 A to 10 A              Change in time is 35…

Q: The figure below displays a circular loop of nickel wire in a uniform magnetic field pointing into…

A: radius of loop (r) = 13 cm magnetic field (B) = 0.1 T time taken (t) = 0.18 seconds

Q: 1. What is Faraday's law of mutual induction? When an emf is produced in a coil because of the…

A: Suppose two coils are coupled with each other. Let the current in the first coil changes with time…

Q: (a) Find the inductance of the solenoid. (b) If the solenoid has 350 turns, what is the magnetic…

A: a) The solenoid’s self-induced emf can be represented as, Here, L, I, and t represent the…

Q: A generator has a 100-turns coil that rotates in a 0.30-T magnetic field at a frequency of 80 Hz,…

A:

Q: A fixed 19.6-cm-diameter wire coil is perpendicular to a magnetic field 0.58 T pointing up. In 0.23…

A: Here given a fixed 19.6 cm diameter coil is perpendicular to magnetic field 0.58 T.This is pointing…

Q: 12.A coil with five series connected turn rotates at a speed of 1200 rpm. That flux per pole is 3 x…

A:

Q: A bicycle generator rotates at 1,975 rad/s, producing a 17.5 V peak emf. It has a 46-turn, 1.00 by…

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Q: A coil with 115 loops and area 0.0120 m^2 rotates at 60.0 Hz through a B field of 0.125 T. What is…

A:

Q: A simple AC generator consists of 10 turns of coils with an area of 1 000 cm2. It rotates at a…

A: Concept used is rate of change of magnetic flux gives emf in coil

Q: Q2. Coil Solenoid In figure, a 120turn coil of radius 1.8 cm and resistance 5.3 ohms is coaxial with…

A: We’ll answer the first question since the exact one wasn’t specified. Please submit a new question…

Q: A 140-turn circular coil has diameter 5.0 cm . A magnetic field perpendicular to the coil is changing…

A: The figure shows the magnetic field on the axis of a current carrying circular coil.

Q: 9. As a coil in an AC generator rotates in a magnetic field, it reaches the position shown in the…

A: Solution: The situation can be seen that as time t=0 the moment of the flux varying will be given…

Q: 6. Two solenoids A and B, spaced close to each other and sharing the same cylindrical axis, have 450…

A: Ans:- 6,7 Image-1

Q: 3. A solenoid consists of 400 turns per centimeter and the radius of windings is 1.382X102 m.…

A:

Q: 4) A long solenoid has n=1000 turns per meter and a current I = 5 sin(wt). Inside the solenoid with…

A: Given: n= 1000 turns per meter; I = 5 sin(wt) a= 0.5 m; b= 0.2m; Nc = 300 turns; t = 2s; R = 2 ohm

Voltage Across Inductor

An actor is a passive electrical component that consists of a coil bent in the form of wire which uses electromagnetism to produce electric current through the coil. When the electric current flows through a conductor that is the coil, a magnetic flux is developed around the conductor. This flow of current through the coil creates a magnetic field based on Fleming's Right-hand thumb rule. If there is any decrease in the current passing through the inductor, then the magnetic field will also decrease and energy is released through the generation of electric current. There is also a secondary voltage inducing in the same coil due to the magnetic flux, since it opposes any changes in the electric current flowing through the circuit. An inductor is also called choke, coil, or solenoid. A choke is designed to block certain frequencies when the DC current passes. A winding coil is coated with insulation to give extra insulation and protect the circuit. They are usually tightly wrapped around a central core which is cylindrical in nature so that the magnetic flux can be induced. The solenoid is a three-dimension coil that is used to exhibit electromagnetism when the magnetic field is developed due to the current flowing through the coil. The sign convention of the inductor is the same as the power dissipating device. When the current flows into the positive side of the voltage across the inductor, the value is positive and the inductor dissipates power whereas when the inductor releases the power back to the circuit, the current has a negative sign convention.