at a point is equal to the negative potential gradient at that point?

Related Mcqs:

1. The minimum value of potential gradient in a cable occurs in____________?

   A. insulation
   B. conductor
   C. outer sheath
   D. uniformly all over

2. The potential gradient across the material of low permittivity is than across the material of high permittivity?

   A. smaller
   B. greater
   C. both (A) and (B)
   D. none of the above

3. When the dielectric is homogeneous,the potential gradient is_____________?

   A. uniform
   B. non-uniform
   C. zero
   D. any of the above

4. In a cable capacitor, voltage gradient is maximum at the surface of the______________?

   A. earth
   B. conduction
   C. sheath
   D. insulator

5. If a third equal and similar charge is placed between two equal and similar charges, then this third charge will_____________?

   A. move out of the field of influence of the two charges
   B. remain in stable equilibrium
   C. not be in equilibrium
   D. be in unstable equilibrium

6. A positive and a negative charge are initially 50 mm apart. When they are moved close together so that they are now only 10 mm apart, the force between them will be________________?

   A. 5 times smaller than before
   B. 5 times greater than before
   C. 10 times greater than before
   D. 25 times larger than before

7. Two infinite parallel plates 10 mm apart have maintained between them a potential difference of 100 V. The acceleration of an electron placed between them is______________?

   A. 0.56 x 1015 m/s2
   B. 1.5 x 1015 m/s2
   C. 1.6 x 1015 m/s2
   D. 1.76 x 1015 m/s2

8. A capacitor having capacitance of 5 uF is charged to a potential difference of 10,000 V. The energy stored in the capacitor is__________?

   A. 50 joules
   B. 150 joules
   C. 200 joules
   D. 250 joules

9. A 5 μF capacitor has a potential difference across its plates of 200 volts. The charge on the capacitor is____________?

   A. 2.5 x 10-8 C
   B. 10-5 C
   C. 103 C
   D. 4 x 103 C

10. Potential difference is the work done in moving unit positive charge form one point to another________________?

    A. in the direction of electric intensity
    B. against electric intensity
    C. in any direction
    D. in the direction of electric flux