education
lectrostatics
(Q.1) What is the direction of electric field intensity at a point on equatorial line of dipole? ( 1 mark )
(Q.2) Define electric dipole moment? ( 1 mark )
(Q.3) Define electric field intensity? ( 1 mark )
(Q.4) When does a dipole experiences maximum torque placed in uniform electric field? ( 1 mark )
(Q.5) What happens when an electric dipole is placed in non uniform electric field? ( 1 mark )
(Q.6) What is the value of electric field intensity inside a charged conductor? Why? ( 1 mark )
(Q.7) Explain, why two electric lines of forces cannot intersect each other. ( 1 mark )
(Q.8) How can we charge a body? ( 1 mark )
(Q.9) S1and S2are two parallel concentric spheres enclosing charges Q and 2 Q respectively as shown in Fig. The ratio of the electric flux through S1and S2 (H) ( 1 mark )
(a) 1/2
(b) 1/3
(c) 1/4
(d) 1/5
(Q.10) A charged particle having a charge of –3μC is placed close to a sheet of charge having a surface charge density 5×10–6C m–2.The force of attraction between the particle and the sheet of charge will be ( 1 mark )
(Q.11) Charges nC are seperated by 5 mm. The magnitude of dipole moment is ( 1 mark )
(Q.12) The value of charge on a body carrying 20 excess electrons is ( 1 mark )
(Q.13) The potential energy of two equal negative point charges 2 micro coulomb each, eld 1 meter apart in air is ( 1 mark )
(Q.14) The dielectric constant of a metal is ( 1 mark )
(Q.15) A charge of 2 coulomb moves between two plates maintained at a potential difference of 1 volt. The energy acquired by the charge is (H) ( 1 mark )
(Q.16) Dielectric constant of a medium is unity. Its permittivity will be ( 1 mark )
(a) 9.854 10-12 C2N-1m-2
(b) 8.254 10-12 C2N-1m-2
(c) 8.854 10-12 C2N-1m-2
(d) 6.854 10-12 C2N-1m-2
(Q.17) Two identical balls each have a mass of 10 g. What charges should these balls be given so that their interaction equalizes the gravitational force of attraction between them? The radii of the balls may be ignored in
(Q.1) What is the direction of electric field intensity at a point on equatorial line of dipole? ( 1 mark )
(Q.2) Define electric dipole moment? ( 1 mark )
(Q.3) Define electric field intensity? ( 1 mark )
(Q.4) When does a dipole experiences maximum torque placed in uniform electric field? ( 1 mark )
(Q.5) What happens when an electric dipole is placed in non uniform electric field? ( 1 mark )
(Q.6) What is the value of electric field intensity inside a charged conductor? Why? ( 1 mark )
(Q.7) Explain, why two electric lines of forces cannot intersect each other. ( 1 mark )
(Q.8) How can we charge a body? ( 1 mark )
(Q.9) S1and S2are two parallel concentric spheres enclosing charges Q and 2 Q respectively as shown in Fig. The ratio of the electric flux through S1and S2 (H) ( 1 mark )
(a) 1/2
(b) 1/3
(c) 1/4
(d) 1/5
(Q.10) A charged particle having a charge of –3μC is placed close to a sheet of charge having a surface charge density 5×10–6C m–2.The force of attraction between the particle and the sheet of charge will be ( 1 mark )
(Q.11) Charges nC are seperated by 5 mm. The magnitude of dipole moment is ( 1 mark )
(Q.12) The value of charge on a body carrying 20 excess electrons is ( 1 mark )
(Q.13) The potential energy of two equal negative point charges 2 micro coulomb each, eld 1 meter apart in air is ( 1 mark )
(Q.14) The dielectric constant of a metal is ( 1 mark )
(Q.15) A charge of 2 coulomb moves between two plates maintained at a potential difference of 1 volt. The energy acquired by the charge is (H) ( 1 mark )
(Q.16) Dielectric constant of a medium is unity. Its permittivity will be ( 1 mark )
(a) 9.854 10-12 C2N-1m-2
(b) 8.254 10-12 C2N-1m-2
(c) 8.854 10-12 C2N-1m-2
(d) 6.854 10-12 C2N-1m-2
(Q.17) Two identical balls each have a mass of 10 g. What charges should these balls be given so that their interaction equalizes the gravitational force of attraction between them? The radii of the balls may be ignored in