A long solenoid of radius a, is driven by an alternating current, so that the field inside is sinusoidal:  A circular loop of wire, of radius a/2 and resistance R, is placed inside the solenoid, and coaxial cable with it. Find the current induced in the loop, as a function if time. b) Why do we use round shaped coils

Q: Refer to diagram 3. A closed circular loop (N = 409 turns, radius r= 6.6 cm, resistance R = 3.65 Q)…

A: Formula of induced current is as follows; I=εR…

Q: A circular conducting coil, with the radius R = 15.0 cm, is placed in a uniform veritical magnetic…

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Q: Two ideal solenoids of radii R and 4R, respectively, have n turns per meter, and each carries a…

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Q: The current I = Io sin(wt) through a long solenoid with n turns per meter and radius R is changing…

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Q: The rectangular loop shown in the figure is pushed into the magnetic field which points inward. X X…

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Q: Show why the net magnetic flux on a closed-loop is always 0.

A: Why net magnetic flux on a closed loop is zero.

Q: ★★ A long copper wire of length L carries an electric current, I. This wire can be formed into a…

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Q: Explain Biot -Savart Law and use this law to find the magnetic field at a point P on the axis of the…

A: Biot-Savart Law: The magnetic field produced due to the current-carrying conductor.

Q: Does self-inductance depend on the value of the magnetic flux? Does it depend on the current through…

A: From the given equation,

Q: For the next two items, consider a thin conducting rod of length L riding along two parallel…

A: Given problem is related to megnetic feild effect.

Q: * to obtain maximum induced e.m.f. in dypamo's coil, the plane of the co must be: a) Normal to the…

A: Question 4 The rate of change of magnetic flux that is linked with the coils are maximum when the…

Q: The magnetic flux through each turn of a 210-turn coil is given by B = 9.25 x 10-³ sin(at), where is…

A: Given: The number of turns is 210. The magnetic flux is. ϕB=9.25×10-3sinωt…

Q: The bar of length 1=20 cm, resistance 0.0005 Ohms and mass 1 kg shown in the figure slides from rest…

A: Given: Length of the bar (l) = 20 cm = 0.2 m Resistance in bar (R) = 0.0005 Ω. Mass of the bar (m)…

Q: A conducting bar of mass M slides without friction down two vertical conducting rails, which are…

A: Given data The mass of the sliding bar is M The distance between the rails is L The value of the…

Q: An infinitely long solenoid of radius R and n turns per unit length carries an oscillating current…

A: Use ampere’s circuital law to find the magnetic field inside the solenoid…

Q: What would be the effect on B inside a long solenoid if(a) the diameter of all the loops was…

A: a) The magnetic field strength is not affected if the diameter of the loops doubles. ... (b) If the…

Q: A long current-carrying wire is formed into an N-turn coil, as shown. The coil has radius R = 4mm, N…

A: Given:- A long current-carrying wire is formed into an N-turn coil, as shown. The coil has radius R…

Q: A long solenoid has a square cross-section with sides of length l, n turns per length has the z-axis…

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Q: A  solenoid,  a  coil  of  wire  acting as   a  magnet  when it   carries  a  current,  is  placed…

A: Analysing the question, In this question we have been given that a current carrying solenoid is…

Q: A 10-turn circular coil of radius 5 cm is dropped vertically into a very long solenoid which has a…

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Q: Two ideal solenoids of radii R and 5R, respectively, have n turns per meter, and each carries a…

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Q: Problem Consider a circular loop of wire of radius R located in the yz plane and carrying a steady…

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Q: 3. A uniform magnetic ficld is given by B = btk where b = 0.35 T/s. Find the induced current in a…

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Q: Q3: A long solenoid, of radius Scm, is driven by an altemating current, so that radius - cm and…

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Q: A homogeneous field of magnetic induction B is perpendicular to a track of gauge ℓ which is inclined…

A: magnetic induction = B  track of gauge = ℓ  angle = α  mass = m

Q: The magnetic flux through each turn of a 200-turn coil is given by Og = 9.25 x 10- sin(at), where o…

A: Given: The number of turns is 200. The magnetic flux is given as. ϕB=9.25×10-3sinωt…

Q: it. Find the current induced in the loop. Q3: A long solenoid, of radius 5cm, is driven by an…

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Q: A solenoid of length L, N windings, and radius b (L is longer than b). A current I is flowing…

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Q: A square loop of wire (side length a) lies on a table, a distance s from a very long straight wire,…

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Q: A non-conducting, uniformly charged disc of surface chargedensity σ, radius Rand negligible…

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Q: The current I through a long solenoid with n turns per meter and radius R is changing with time as…

A: Given: The number of turns are n. The radius is R.

Q: A square loop of wire with a single turn and side l = 1.0 cm is placed inside a solenoid that has a…

A: Induced emf ε=-dϕdt=-ddtBA=-Addtμ0NIl=-a2ddtμ0NI0cosωtl=μ0a2NI0sinωtl

Q: A magnetic field is uniform over a flat, horizontal circular region with a radius of 1.70 mm, and…

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Q: A wire loop is spinning on its axis in a uniform magnetic field. Is there an emf induced in the…

A: (C) yes but only if the angular velocity of loop is constant.

Q: Two ideal solenoids of radii R and 4R, respectively, have n turns per meter, and each carries a…

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Q: O A ectangularr loop of wive is polled at a constant acceleration from a region of Zero maqnetic…

A: Emf induced due to motion of rectangular coil in perpendicular magnetic field: Let the length of the…

Q: There is a uniform magnetic field of B frictionlessly on other wires in the horizontal direction, is…

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Q: Consider a conducting loop placed on a horizontal plane in a region of uniform vertical magnetic…

A: The loop is placed in a horizontal plane. The direction of the magnetic field is in the vertically…

Q: Find the magnitude and direction of the induced emf around the rectangular loop of sides a and b as…

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Q: Determine the magnetic flux through a rectangular loop (a × b) due to an infinitely 1 conductor…

A: We know that we have given that the region between the x =0 and x =d is free space.   The surface…

Q: f the current in the primary solenoid is clockwise (looking at the front view), then find the…

A: Lenz's law states that the the current induced opposes any change in the magnetic flux. So when the…

Q: - A circular conducting coil, with the radius R = 15.0 cm, is placed in a uniform veritical magnetic…

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Electromagnetics Torque and Power

Electromagnetic torque is the torque required to start the rotation of a motor, and it is generally equal to the load torque. The output electromagnetic torque (torque produced by the armature on the air gap) is the load torque at no load, and the load torque is equal to the electromagnetic torque. Due to electromagnetic force, electrical torque is a circular motion. Torque is the radial force from an axis of rotation. It is the vector cross product of the radius and force vectors.