General Physics Questions And Answers


Q1. 
Which of the following is not a consequence of Gauss’s law?

Ans.
There are abundant sources or sinks of the magnetic field inside a closed surface


Q2. 
Isolated magnetic poles exist.

Ans.
False


Q3. 
Which among the following is the source of the magnetic field (magnetism)?

Ans.
Electrical origin


Q4. 
The line of force in a magnetic field represents the direction at each point that a magnetic needle placed at the point takes up. Do they also represent the direction of the force on a moving charge at each point?

Ans.
Not possible


Q5. 
Which among the following is not attracted by magnets?

Ans.
Copper


Q6. 
Find the true statement.

Ans.
The force on a current carrying conductor in a perpendicular magnetic field is due to the electrical energy initially converted from mechanical energy


Q7. 
Induced emf and motional emf are exactly the same.

Ans.
False


Q8. 
Find the true statement.

Ans.
Motional emf is directly proportional to the magnetic field


Q9. 
A closed-loop move normal to the constant electric field between the plates of a large capacitor. What is the amount of current produced when it is wholly inside the region between the capacitor plates?

Ans.
Zero


Q10. 
Which law is used in finding the direction of current in an a.c. generator?

Ans.
Lenz’s law