# The uniform magnetic field is

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The uniform magnetic field is the field in which all lines of magnetic flux are parallel and equidistant.

## Related questions

An iron ring of mean circumference 80 cm is uniformly wound with 500 turns of wire and carries 0.8A. Find the magnetic field strength.

The magnetic field intensity at the centre of a current carrying coil of diameter J m is K. The current flowing in the coil is

At a particular temperature and current density, the critical magnetic field for a Type I superconductor is Bc and that for a type II superconductor ranges from Bc1 to Bc2 keeping other parameters unloaded. both superconductors are now subjected to a magnetic field B that satisfies the conditions B>Bc and Bc1 < ... will maintain a vortex state  (d) Type I superconductor will switch to the normal conducting state, while Type II superconductor will maintain a vortex sate

Which of the following statements is not characteristic of a static magnetic field? (A) It is solenoidal. (B) It is conservative. (C) It has no sinks or sources. (D) Flux lines are always closed.

The energy density of magnetic field in a magnetic circuit is (A) inversely proportional to magnetic flux density (B) directly proportional to the absolute permeability (C) directly proportional to the magnetic flux density (D) directly proportional to the square of magnetic flux density

A coil of wire is placed in a changing magnetic field. If the number of turns in the coil is decreased, the voltage induced across the coil will: A. increase B. decrease C. remain constant D. be excessive

The induced voltage across a coil with 250 turns that is located in a magnetic field and is changing at a rate of 8 Wb/s is A. 1,000 V B. 2,000 V C.31.25 V D. 3,125 V

What is the energy stored in the magnetic field at a solenoid of 40 cm long and 4 cm diameter wound with 100 turns of wire carrying a current at 20A?  (A) 0.705 Joule (B) 0.789 Joule (C) 0.587 Joule (D) 0.658 Joule

At transition temperature the value of the critical field is?

A long wire carrying 100 amp is placed in an external magnetic field of 50 gauss. The wire is at right angles to the field.

What arc the errors occurring in measuring devices due to stray magnetic field and temp '? Explain how to compensate them.

Give the relation between magnetic field strength, magnetic flux density and permeability.

The magnetic field on the axis of a current carrying polygonal coil will have only a horizontal component parallel to the Plane of the coil

Which of these materials requires the least value of magnetic field strength to magnetize it?  a. Nickel b. Silver c. Tungsten d. Sodium chloride

Which of the following laws relates the magnetic field to the magnitude, direction, length, and proximity of the electric current? A) Lenz’s law B) Faraday’s law C) Biot–Savart law D) None of these

If the cross-sectional area of a magnetic field increases, but the flux remains the same, the flux density: A. increases B. decreases C. remains the same D. doubles

According to Biot-Savart’s laws the magnetic field at a point due to incremental element of length dl carrying a current is  (A) Inversely proportional to the current carried by the element (B) Directly proportional to the current carried by the element (C) Directly proportional to the square of the distance (D) Inversely proportional to the length of the element

A rectangular magnet of magnetic moment M is cut into two piece of same length, the magnetic moment of each piece will be

If a copper disc is rotated rapidly below a freely suspended magnetic needle, the magnetic needle shall start rotating with a velocity

______ is most commonly used for making magnetic recording tape.

The value of critical field below the transition temperature will?

Derive an expression for energy stored in a magnetic field .

Define magnetic field strength and state its unit.

An electron having an energy of 20 eV enters a magnetic field of 0.02 webers/sqm at an angle of 30degrees to the field. The time of travel (in nS)of the electron for one revolution is about  A) 1.78 B) 4.21 C) 7.82 D) 10.24

How can a magnetic field be used to generate an electric current?

Define magnetic susceptibility.

The skin effect in conductors is due to non uniform distribution of current in it and major portion of current is near the _______ of conductor.  (1) Surface (2) Center (3) Complete cross section area (4) Axis

Which of the following is the name given to resistance of thin films that are uniform in thickness? A) Area resistance B) Sheet resistance C) Filmy resistance D) None of these

What is the resistance of a 160 m wire with a uniform diameter of 0.28 mm, if the specific resistance is 12.32 μΩ-cm? A) 3.2 Ω B) 3.2 μΩ C) 0.8 Ω D) None of these

The scale of meter is uniform. Its type is  A) moving iron B) Induction C) moving coil permanent magnet D) moving coil dynamometer

Uniform plane wave is (a) Longitudinal in nature (b) Transverse in nature (c) Neither longitudinal nor transverse in nature (d) x -directed

The use of non-uniform quantization leads to: (1) Reduction in transmission bandwidth. (2) Increase in maximum SNR. (3) Increase in SNR for signal levels. (4) Simplification of quantization process.

The non-uniform distribution of voltage across the units in a string of suspension type insulators is due to?