1.The permeability of a magnetic material is 0.9983. Name the type of magnetic materials it represents.

Ans Paramagnetic

2. What is the order of voltages that can be built up using a Van De Graff generator?

Ans 10⁶    volts or few million volts

3. What is the angle b/w Electric field and Dipole moment at an axial point?

Ans Zero

4. State the condition in which terminal voltage across a secondary cell is equal to its emf.

Ans During Charging of a cell

5. 1 coulomb is equal to how many statcoulomb.

Ans= 3 * 10⁹ 

6. Name one electromagnetic wave other than visible light that are emitted by an incandescent bulb.

Ans Infrared Light

7. Name the physical quantity whose SI unit is  Coulomb per Volt.

Ans Capacitance

 

8. Lorentz force is given by F = Q ( VxB ). Of these, name one pair of vectors which are always at right angles to each other.

Ans Fand B

9. Two point charges q₁ and q₂ are placed close to each other. What is the nature of the force between them when q₁q₂ < 0

Ans--attractive

10.  What is the mathematical relation between speed of electromagnetic waves, permittivity and permeability in vacuum?

 

 

ANs    c=1/

 

 

11. If the current and voltage applied across an ideal inductor is 1A and 5 Volts what will be the power consumed by this inductor?

Ans-zero

12. Which constituent radiation of the electromagnetic spectrum is used  in radar.

Ans - Microwaves

13. A person who studies physics is known as a?

Ans -Physicist

14. The wire inside an electric bulb is known as the What?

Ans-filament

 

15. What kind of eclipse do we have when the moon is between the sun and the earth?

Ans- Solar Eclipse

16. Earth is located in which galaxy?

Ans- Milky Way

 

17. Magnetic Force is a central force . True or False

Ans --False

 

18.Line intregal of Electric Field over a closed path is non zero .in What way such an Electric field is produced.

Ans By changing B 

 

19. 1 debye is equal to how many coulomb  meter

Ans   1 debye=3.335 x 10-30 coulomb x meter

 

20. Name the Substance of the wire used in Moving Coil Galvanometer because of its property of high restoring torque.

Ans Phosphor Bronze