According to law of electrostatics-
A charged body attracts similar charged bodies
A charged body attracts the bodies carrying similar charge and repel the bodies possessing opposite charge
A charged body repels the bodies possessing similar charge and attracts the bodies with opposite charge
A charged body attracts all types of other charged bodies
An ebonite rod rubbed with fur and a glass rod rubbed with silk cloth are brought nearer to each other. Then:
they will attract each other
they will repel each other
nothing will happen to them
they will get heated up
An inflated rubber balloon is rubbed with a woollen cloth whereas a ballpoint pen refill is rubbed with a polythene bag. Which of these will get positively charged?
Inflated rubber ballon
Woollen cloth
Ballpoint pen refill
Polythene bag
Which of the following is the best thing to do during heavy lightning?
Lying on the ground in an open place
Going into the nearest water body
Staying indoors away from metalic doors or windows
Standing under a tall tree
Electroscope is used:
to detect and test small electric charges
to calculate the amount of electric charge flowing through the conductor in the given interval of time
to find out the presence of antimatter
to test the presence of magnetic field
The force present between two charged bodies is:
electrostatic force
electromagnetic force
gravitational force
frictional force
When a plastic comb is rubbed with dry hair, the hair get positively charged by friction. In this process:
the hair lose some positive protons
the hair gain some positive protons
the hair lose some negative electrons
the hair gain some negative electrons
When two bodies are rubbed against each other:
they acquire equal and similar charges
they acquire equal and opposite charges
they acquire different charges but in different amounts depending upon their masses
they do not acquire any charge
When we remove polyester or woollen cloth in dark, we can see spark and hear a cracking sound. These are due to:
static electricity
current electricity
reflection of light
refraction of light
During the formation of rain, when water vapour changes back to liquid in the form of rain drops:
heat is absorbed
heat is released
heat is first absorbed and then released
there is no exchange of heat
