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WorksheetsElectric charges at rest Class- VII
Total questions: 13
Worksheet time: 7mins
When a glass rod is rubbed against silk cloth, silk cloth possesses ____ charge.
positive
negative
both the charge
none of these
_______ safeguards the structures against electric lightning.
Fuse
earthing
ligntninh conductor
copper wire
Like charges _____ each other and unkike charges ____ each other.
attract ,repel
repel , attract
nullify , repel
If we take negatively charged ebonite rod towards the similarly charged rod, there will be
no change
attraction
repulsion
Out of follwing the one which is not an example of conductor is
copper plate
alluminium rod
glass plate
silver spoon
In which of the following method of charging , the charge get shared after touching?
induction
Charging by friction
conduction
none of these
Out of the following which will not get electrically charged by rubbing?
plastic scale
steel rod
glass rod
woollen cloth
Electrically charged objects ______ uncharged objects.
repel
attract
conduct
none of these
The electric charge generated by ____stays only as long as the charged object is near to it.
friction
attraction
conduction
induction
It is a simple device used to detect the electric charge on an object. Name it.
electric stove
microscope
Gold leaf electroscope
lightning conductor
_____ gas protects us from the harmful ultra violet rays coming from the sun.
Hydrogen
Ozone
oxygen
Chlorine
During lightning discharge ____ gas gets dissolved in rainwater.
hydrogen
chlorine
nitrogen
sulphur
WHAT IS THIS PROCESS KNOWN AS?
charging
rubbing
earthing
induction
