When a dielectric is placed in an electric field the field strength____________?

Related Mcqs:

1. Voltage applied across a ceramic dielectric produces an electrolytic field 100 times greater than air. What will be the value of dielectric constant ________?

   A. 50
   B. 100
   C. 150
   D. 200

2. Electric intensity at any point in an electric field is equal to the at that point?

   A. electric flux
   B. magnetic flux density
   C. potential gradient
   D. none of the above

3. The electric field intensity at a point situated 4 meters from a point charge is 200 N/C. If the distance is reduced to 2 meters, the field intensity will be______________?

   A. 400 N/C
   B. 600 N/C
   C. 800 N/C
   D. 1200 N/C

4. If an electrons is allowed to move along the field in a non uniform electric field then it will follow__________________?

   A. Spiral path
   B. Straight line
   C. Curved path
   D. Circular path

5. Electric force between two point charges in air or vacuum is F. If we replace air or vacuum by an insulator (dielectric) of relative permitivity Cr the force between the charges will_______________?

   A. decrease
   B. increase
   C. remain constant
   D. depends upon composition of dielectric

6. The electric charge of 100 °C is 13cm apart from another charge 16.9°C electric force between them is_____________?

   A. 9x107N
   B. 900N
   C. 9x105N
   D. 9x106N

7. Which of the following expression is correct for electric field strength___________?

   A. E = D/E
   B. E = D2/t
   C. E = jtD
   D. E= nD2

8. A potential of 400 V is applied to a capacitor, the plates of which are 4 mm apart. The strength of electric field is___________?

   A. 100 kV/m
   B. 10 kV/m
   C. 5 kV/m
   D. 2 kV/m

9. Electric field intensity is a quantity_____________?

   A. scalar
   B. vector
   C. both A. and (6)
   D. none of the above

10. Energy stored in the electric field of a capacitor C when charged from a D.C source of voltage V is equal to joules_______________?

    A. CV2
    B. C2V
    C. CV2
    D. CV