General Physics Questions And Answers


Q1. 
Which type of a physical quantity is electric current?

Ans.
Scalar quantity


Q2. 
Which of these is a correct definition of electronic current?

Ans.
Current that flows from lower potential to higher potential


Q3. 
What is the study of electric charges in motion called?

Ans.
Current electricity


Q4. 
What is moving coil galvanometer used for?

Ans.
Measurement of small currents


Q5. 
Find the true statement.

Ans.
Current sensitivity is expressed as the exact reverse of the galvanometer constant


Q6. 
The frequency of revolution of a charged particle in a cyclotron does not depend on ‘X’. Identify X.

Ans.
Speed of the particle


Q7. 
A positive charge is moving vertically upwards. When it enters a region of magnetic field directed towards north, what is the direction of the force on the charge?

Ans.
Left


Q8. 
In a certain arrangement, a proton does not get deflected while moving through a magnetic field region. Under what condition is it possible?

Ans.
F = 0


Q9. 
Which of the following will experience a maximum force, when projected with the same velocity perpendicular to the magnetic field : (i) α-particle, and (ii) β-particle?

Ans.
α-particle


Q10. 
A charged particle in a plasma trapped in a magnetic bottle leaks out after a millisecond. What is the total work done by the magnetic field during the time the particle is trapped?

Ans.
Zero