Electrostatics — practice questions
36 curated practice questions from Electrostatics (Physics NEET, NTA Exams) — 13 hard, 16 easy, 7 medium. Every question includes the final answer free; step-by-step worked solutions with a free account.
- The electrostatic potential inside a charged spherical ball is given by =a r^ 2 +b where r is the distance from the…
- A Gaussian sphere encloses an electric dipole within it. The total flux across the sphere is
- A conducting sphere of radius R = 20 cm is given a charge Q = 16 μC. What is E at its centre?
- A charged particle of mass 0.003 g is held stationary in space by placing it in a downward direction of electric field…
- A parallel plate capacitor with air between the plates has a capacitance of 9 pF. The separation between its plates is…
- A charged particle of mass m and charge q is released from rest in an uniform electric field E. Neglecting the effect…
- The potential of the electric field produced by a point charge at any point (x, y, z) is given by y=3 x^ 2 +5 , where…
- In a region, the potential is represented by V(x, y, z)=6 x-8 x y-8 y+6 y z where V is n volts and x, y, z are in…
- A particle of mass m and charge q is placed at rest in a uniform electric field E as shown and released. The kinetic…
- Given below are two statements Statement I : The potential difference between any two points in an electric field…
- What is the total charge in coulomb of 75.0 kg of electrons?
- A ball of mass 1 g and charge 10 -8 C moves from a point A, where potential is 600 volt to the point B where potential…
- Consider a neutral conducting sphere. A positive point charge is placed outside the sphere. The net charge on the…
- An electron moving along positive x direction with a speed of 3 x 10 6 ms -1 enters the region of a uniform electric…
- Given below are two statements Statement I : On going away from a point charge or a small electric dipole, electric…
- If _ s E d S =0 over a surface, then:
- Given below are two statements: One is labeled as Assertion (A) and the other is labeled as Reason (R). Assertion (A) …
- A body has a charge of — 2 μC. If it has 2.5 x 10 13 protons, then how many electrons the body has?
- Two point charges -q and +q are placed at a distance of L, as shown in the figure. -q ~L The magnitude of electric…
- A conductor has been given a charge — 3 x 10 -7 C by transferring electrons. Mass increase (in kg) of the conductor and…
- A capacitor of 10 μF charged up to 250 V is connected in parallel with another capacitor of 5 μF charged up to 100 V…
- If potential (in volts) in a region is expressed as V(x, y, z)=6 x y-y+z y z , the electric field (in N/C) at point (1…
- A comb run through one's dry hair attracts small bits of paper. This is due to :
- A series combination of three capacitors of capacitance 1 μF, 2 μF and 8 μF is connected in series to a battery of emf…
- An electric field E=A r acts radially outwards, where A is a positive constant and r is radial distance. The charge…
- The electric field intensity produced by the radia-tions coming from 100 W bulb at a 3 m distance is E . The electric…
- A capacitor of capacity C 1 is charged up to potential V volt and then connected in parallel to an uncharged capacitor…
- Electrostatic potential is given by y=6 x-8 x y^ 2 -8 y+6 y z-4 z^ 2 . The electrostatic force acting on 0.8 C point…
- A glass rod rubbed with piece of silk is brought near a rubber rod rubbed with a piece of wool. Then between them…
- A hollow metal sphere of radius 6 cm is charged such that the potential on its surface is 15 V. The potential at the…
- Three capacitors of capacitances 1 μF, 2 μF and 4 μF are connected first in a series combination, and then in a…
- Two hollow conducting spheres for radii R 1 and R 2 (R 1 >> R 2 ) have equal charges. The potential would be
- Given below are two statements Statement I : When a dielectric slab is gradually inserted between the plates of an…
- When light propagates through a material medium of relative permittivity r and relative permeability r , the velocity…
- When a body is Earth connected, electrons from the Earth flow into the body. This means the body is :
- Given below are two statements: One is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A)…