Home
Current Affairs January 2024

What is the correct answer?

4

The quantity 10^6 maxwells is equivalent to one

A. Weber

B. Gauss

C. Gilbert

D. Tesla

Correct Answer :

A. Weber


Related Questions

What is the correct answer?

4

A test charge means a charge of

A. -1 C

B. 1 electron

C. +1 C

D. -20 C

What is the correct answer?

4

If the value of 25 a conductor is 1/255 per oCa then the value of 20is

A. 1/300 per oC

B. 1/250 peroC

C. 1/230 per oC

D. 1/260 per oC

What is the correct answer?

4

The emf induced in a coil due to the changing current of another neighboring coil is called

A. Mutually induced emf

B. Self induced emf

C. Statically induced emf

D. Dynamically induced emf

What is the correct answer?

4

What is the other name for dielectric strength?

A. Breakdown voltage

B. Electric intensity

C. Potential gradient

D. Dielectric constant

What is the correct answer?

4

The magnetic field of a magnetized iron bar when strongly heated

A. Becomes weaker

B. Becomes stronger

C. Reverses in direction

D. is unchanged

What is the correct answer?

4

One oersted (Oe) is equivalent to _____ Gb/cm.

A.

B.

What is the correct answer?

4

Which of the following has the least number of valence electrons?

A. Conductor

B. Semiconductor

C. Insulator

D. Semi- insulator

What is the correct answer?

4

Formed when there exist distant electronic interactions between (opposite) charges present in the neighboring atoms or molecules.

A. Ionic bond

B. Covalent bond

C. Metallic bond

D. Van der Waals bond

What is the correct answer?

4

The straight line passing through the two poles of magnet is called

A. Real axis

B. Cartesian axis

C. Magnetic axis

D. Imaginary axis

What is the correct answer?

4

If the solenoid is gripped by the right hand with the fingers pointing the direction of current flowa the outstretched thumb will then point the north pole. This is known as

A. Right hand rule

B. Helix rule

C. End rule

D. Cork screw rule

What is the correct answer?

4

A germanium atom has an atomic weight of72. How many neutrons are there?

A.

B.

What is the correct answer?

4

Refers to the non- metallic materials that have the ferromagnetic properties of iron.

A. Ferrites

B. Ferromagnetic

C. Diamagnetic

D. Paramagnetic

What is the correct answer?

4

Lenz's law is the consequence of the law of conservation of

A. Energy

B. Charge

C. Field lines

D. Momentum

What is the correct answer?

4

Materials that have very high permeabilities (hundreds and even thousands times of that of free space)

A. Paramagnetic

B. Non- magnetic

C. Ferromagnetic

D. Diamagnetic

What is the correct answer?

4

Magnetic effects of the earth as a huge magnet with north and south poles.

A. Diamagnetic

B. Ferromagnetic

C. Terrestrial magnetism

D. Terrestrial ferromagnetism

What is the correct answer?

4

A magnetic circuit carries a flux iin the iron part and a fluxgin the air gap. What is the leakage coefficient?

A. i/g

B. i × g

C. g/ i

D. i + g

What is the correct answer?

4

Which of the following is a diamagnetic material?

A. Aluminum

B. Silver

C. Air

D. Cobalt

What is the correct answer?

4

Cobalt is an example of a ______ material.

A. Paramagnetic

B. Diamagnetic

C. Ferromagnetic

D. Non- magnetic

What is the correct answer?

4

The ability of a material to conduct magnetic flux through it.

A. Permittivity

B. Reluctivity

C. Conductivity

D. Permeability

What is the correct answer?

4

The magnitude of the induced emf in a coil is directly proportional to the rate of change of flux linkages. This is known as

A. Joule's Law

B. Faraday's second law of electromagnetic induction

C. Faraday's first law of electromagnetic induction

D. Coulomb's Law

What is the correct answer?

4

Which of the following is used by temporary magnets as the magnetic material?

A. Hardened steel

B. Cobalt steel

C. Soft iron

D. Tungsten steel

What is the correct answer?

4

Electric lines of force leave or enter the charge surface at an angle of

A. 30o

B. 45 o

C. 90o

D. depending upon the angle of launch and entry

What is the correct answer?

4

A magnetic material losses its ferromagnetic properties at a point called

A. Curie temperature

B. Inferred absolute temperature

C. Room temperature

D. Absolute temperature

What is the correct answer?

4

What determines the value of the temperature coefficient of resistance of a material?

A. length

B. cross-sectional area

C. volume

D. nature and temperature

What is the correct answer?

4

Permeance is analogous to

A. Conductance

B. Reluctance

C. Admittance

D. Resistance

What is the correct answer?

4

The B-H curve of ________ is not a straight line.

A. air

B. wood

C. silicon steel

D. soft iron

What is the correct answer?

4

Ohm's law can be used only to a _____ circuit or component.

A. Unilateral

B. Exponential

C. Trivalent

D. Linear

What is the correct answer?

4

Materials whose permeabilities are slightly greater than that of free space

A. Paramagnetic

B. Non- magnetic

C. Ferromagnetic

D. Diamagnetic

What is the correct answer?

4

If two similar charges 1 coulomb each are placed 1 m apart in aira then the force of repulsion is

A. 8 × 10^6 N

B. 9 × 10 ^9 N

C. 10^6 N

D. 5 × 10^6 N

What is the correct answer?

4

A factor used to correct for the electrostatic forces of the more distant ions in an ionic solid.

A. Avogadro's number

B. Planck's constant

C. Boltzmann's constant

D. Madelung constant