Once Ampere current is given
1A = 1s * 1C
1A = 1S / 1C
1A = 1C / 1S
1A = 1C / 1 0hm
What is SI Unit of Amount of Substance?
Gram
Kg
Mol
Newton
In condutors the valancy band and Conduetion band__________________
Have small gap
have huge gap
overlap each other
None of above
Silicon (Si) and Germanium (Ge) are _______________
Divalent
Pentavalent
Trivalent
Tetavalent
The resistivity as semiconduetor is between ___________________
The electrical prperties of material depends upon number of elctrons in______________________
Innermost orbit
Outermost Orbit
Both of above
In Insulators energy gap between conduction band and energy band is________________________
Nearly 1 ev
Between 1ev and 5ev
Above 5 ev
For semiconductor matereial as the temperature increases its conductivity____________________
Decreases
Remains Constant
Increases
If length of a component is 20.15 0.02, If two such component are joined together what will be total length
40.30 0.04
40.300.02
40.30 0.01
40.30 0.08
32 F when converted into celcius will become_____________
273ºC
373ºC
0ºC
100ºC
100ºC will be___________when converted into forhentie
273 F
-273 F
212 F
373 F
The error occur due to faulty instrument is___________________
Instumental error
Human error
systematic error
Random error
SI unit of Resistivity is ____________________________
Ohm - meter ( - m)
Ohm - ( / )
Ohm ( )
Ohm / meter ( / m)
Electrons in atom are_______________changed
Positive
Negative
Neutal
The change is produced due to excess or deficiency of an__________________
Electron
Proton
Orbit
Newtrom
Which mode of heat transfer takes place without actual migration of particiles
Conduction
Conveection
Radiatiion
Conduction is ___________than convection
Faster
Slower
Medium
Which mode of heat transfer can take place even without a medium
Condultion
Convection
Raliation
None of abve
Which of the follwoing material is bad wnductor of heat
Glass
Aluminium
Copper
Steel
There flask cused to keep liqued Hot or coll for long times has double walled glass vessel because
Glass has good reflective porperty
Glass is light in weight
Glass is good conductor of Heat
Glass is bad conductor of heat