If the right handed bottle-opener cork screw is assumed to be along the conductor so as to advance in the direction of current flow, the motion of its handle will indicate the direction of magnetic flux produced around the conductor. This is known as
Right hand rule
Left hand rule
Cork screw rule
End rule
Correct Answer :
C. Cork screw rule
Related Questions
Formed when there exist distant electronic interactions between (opposite) charges present in the neighboring atoms or molecules.
Ionic bond
Covalent bond
Metallic bond
Van der Waals bond
Ohm's law cannot be applied to which material?
Copper
Silver
Silicon carbide
Aluminum
Electric lines of force leave or enter the charge surface at an angle of
30o
45 o
90o
depending upon the angle of launch and entry
A positively charged body has
deficit of electrons
excess of neutrons
excess of electrons
deficit of protons
Which of the following is used by permanent magnets as the magnetic material?
iron
nickel
soft steel
hardened steel
Three charges of +5 Ca -6 C and +9 C are placed inside a sphere. What is the total flux passing through the surface of sphere?
8 C
14 C
20 C
-6 C
The permittivity of a material is given by one of the following formulas.
DE
E/D
D^2/E
D/E
States that the ratio of the thermal conductivity is proportional to the absolute temperature for all metals.
Wien's displacement law
Hartleys law
Hall's law
Wiedemann Franz law
The unit of electrical energy is
Joule
Watt- second
Kilowatt hour
All of these
A group of magnetically aligned atoms is called
Range
Lattice
Domain
Crystal
A substance that attracts pieces iron
Conductor
Semiconductor
Magnet
All of the above
A negatively charge body has
deficit of electrons
excess of protons
excess of electrons
deficit of neutrons
Which of the following magnetic materials can be easily magnetized in both direction?
Soft magnetic materials
Hard magnetic materials
High hysteresis loss materials
Low hysteresis loss materials
What bond is formed when one or more electrons in the outermost energy orbit of an atom are transferred to another?
Ionic
Covalent
Metallic
Van der Waals
Which of the following is a paramagnetic material?
Carbon
Bismuth
Copper
Oxygen
The uncharged particles which have no effect on its atomic charge.
Nucleons
Electrons
Protons
Neutrons
The electrons in the last orbit of an atom are called _______ electrons.
free
valence
bound
thermionic
Electric field intensity is measured in
volts/meter
Newton/meter
Newton-meter
Amperes/meter
The lagging effect between flux density of the material and the magne
Permeance
Eddy current
Hysteresis
R eluctance
When the relative permeability of a material is much greater than 1a it is called _______ material.
diamagnetic
ferromagnetic
paramagnetic
non-magnetic
Materials that have very high permeabilities (hundreds and even thousands times of that of free space)
Paramagnetic
Non- magnetic
Ferromagnetic
Diamagnetic
The idea of preventing one component from affecting another through their common electric and magnetic field is referred to as
Hall effect
Grounding
Shielding
Limiting
Referred to as the specific reluctance of a material
Resistivity
Reluctivity
Conductivity
Permeability
What is used as the insulating material or dielectric in an electric ion
Oiled paper
Mica
Paraffin
Tit anate compound
Small voltages generated by a conductor with current in an external magnetic field.
Skin effect
Magnetic effect
Hall effect
Flywheel Effect
Which of the following materials has permeability slightly less than that of free space?
Paramagnetic
Non- magnetic
Ferromagnetic
Diamagnetic
A principle that states that only two electrons with different spins are allowed to exist in a given orbit
Bohr's principle
Pauli exclusion principle
Avogadro's principle
Coulomb's principle
How many electrons are needed in the valence orbit to give a material's stability?
The unit of flux is _____ in cgs system.
Tesia
Gilbert
Maxwell
Oersted
What is the cgs unit of magnetomotive force?
Gilbert
Ampere- turn
Maxwell
Weber