General Physics Questions And Answers, Set 61

 

General Physics Questions And Answers


Q1. 
Gold-leaf electroscope can be used _______

Ans.
To detect the presence of charge as well as its nature (positive or negative)


Q2. 
Two equally charged spheres attract each other. Now if they touch each other then they will _____

Ans.
Don’t attract or repel


Q3. 
What is the use of a Van de Graff generator?

Ans.
Van de Graff generator is used to create a large amount of static electricity


Q4. 
What is the order of potential difference built up by the Van de Graff generator?

Ans.
Potential difference of the order of several million volts


Q5. 
A Van de Graff generator can kill a person.

Ans.
False


Q6. 
What is the induced dipole moment developed per unit volume of a dielectric when placed in an external electric field called?

Ans.
Polarisation density


Q7. 
In which type of molecule positive and negative charges does not coincide with each other?

Ans.
Polar


Q8. 
The molecules of a polar dielectric have no dipole moment. State true or false.

Ans.
False


Q9. 
‘X’ is a substance which does not allow the flow of charges through it but permits them to exert electrostatic forces on one another through it. Identify X.

Ans.
Dielectric


Q10. 
What is the net electrostatic field in the interior of a conductor?

Ans.
Zero


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