41
As one penetrates a uniformly charged sphere, the electric flied strength E
Answer: increases
Questions
42
A charged oil drop is stationary between a pair of horizontal parallel plates. If the drop carries a charge 3.2×10-10 coulomb and has a mass 1.6×10-19 kg, then the potential difference between the plates is
Answer: 80 V
44
Electric lines of force enter or leave a charged surface at an angle of
Answer: 90°
45
One thousand electrons, each of which carries a charge of -1.6×10-12 coulomb are removed from an initially neutral pitch ball. The resulting charge on the pitch ball is
Answer: 1.6×10-15 coulomb
46
Midway between two equal and similar charges, a third equal and similar charge is placed, then this third charge will
Answer: remain in stable equilibrium
48
When a dielectric is placed in an electric field, the field strength
Answer: decreases
49
A hollow metal sphere of radius 5 cm is charged such that potential on its surface is 10 V. The potential at the center of the sphere is
Answer: 10 V
50
Out of the material given below, which has the highest dielectric strength
Answer: glass
51
Two equal and similar charges are placed a finite distance apart. A third equal and dissimilar charge is placed midway between them. The third charge will be
Answer: in unstable equilibrium
52
A tiny particle carrying a charge of 0.3 C is accelerated through a potential difference of 1000 V. The kinetic energy acquired by the particle is
Answer: 300 J
53
Two copper spheres A and B are of the same radii. Sphere A is hollow and Sphere B is solid. If both spheres are charged to the same potential
Answer: Both will hold the same charge
54
A parallel plate capacitor connected to a battery stores twice as much charge with a given dielectric as it does with air as dielectric, the susceptibility of the dielectric is
Answer: 1
