Processing math: 100%

According to Gauss's law in electrostatics, the electric flux through a closed surface depends on:

1. the area of the surface
2. the quantity of charges enclosed by the surface
3. the shape of the surface
4. the volume enclosed by the surface

Subtopic:  Gauss's Law |
 82%
From NCERT
NEET - 2023
Please attempt this question first.
Hints
Please attempt this question first.

A charge Q μC is placed at the centre of a cube. The flux coming out from any one of its faces will be (in SI units):
1. Qε0×106 2. 2Q3ε0×103
3. Q6ε0×103 4. Q6ε0×106
Subtopic:  Gauss's Law |
 76%
From NCERT
NEET - 2023
Please attempt this question first.
Hints
Please attempt this question first.

An electric dipole is placed at an angle of 30 with an electric field of intensity 2×105 NC1. It experiences a torque equal to 4 N-m. If the dipole length is 2 cm, calculate the magnitude of the charge on the dipole.
1. 2 mC
2. 8 mC
3. 6 mC
4. 4 mC
Subtopic:  Electric Dipole |
 74%
From NCERT
NEET - 2023
Please attempt this question first.
Hints
Please attempt this question first.

advertisementadvertisement

If sEdS=0 over a surface, then:
1. the electric field inside the surface is necessarily uniform.
2. the number of flux lines entering the surface must be equal to the number of flux lines leaving it.
3. the magnitude of electric field on the surface is constant.
4. all the charges must necessarily be inside the surface.
Subtopic:  Gauss's Law |
 79%
From NCERT
NEET - 2023
Please attempt this question first.
Hints
Please attempt this question first.

The ratio of Coulomb's electrostatic force to the gravitational force between an electron and a proton separated by some distance is 2.4×1039. The ratio of the proportionality constant, k=14πε0 to the gravitational constant G is nearly:
(Given that the charge of the proton and electron each =1.6×1019, the mass of the electron =9.11×1031 kg, the mass of the proton =1.67×1027 kg ):
1. 1020
2. 1030
3. 1040
4. 10
Subtopic:  Coulomb's Law |
 61%
From NCERT
NEET - 2022
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
To view explanation, please take trial in the course.
NEET 2025 - Target Batch

Twelve point charges each of charge q C are placed at the circumference of a circle of radius r m with equal angular spacing. If one of the charges is removed, the net electric field (in N/C) at the centre of the circle is:
(ε0-permittivity of free space)

1. 13q4πε0r2 2. zero
3. q4πε0r2 4. 12q4πε0r2
Subtopic:  Electric Field |
 64%
From NCERT
NEET - 2022
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
To view explanation, please take trial in the course.
NEET 2025 - Target Batch

advertisementadvertisement

Two point charges q and +q are placed at a distance of L, as shown in the figure.
          
The magnitude of electric field intensity at a distance R (RL) varies as:
1. 1R6 2. 1R2
3. 1R3 4. 1R4
Subtopic:  Electric Dipole |
 71%
From NCERT
NEET - 2022
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
To view explanation, please take trial in the course.
NEET 2025 - Target Batch

Two identical rectangular plane sheet A and B each of surface charge density ε0 Cm2 are placed parallel to each other as shown in figure. The electric field at the mid point P will be: 
        
1. 2 NC1
2. 1 NC1
3. 0.5 NC1
4. zero
Subtopic:  Electric Field |
 79%
From NCERT
NEET - 2024
Please attempt this question first.
Hints
Please attempt this question first.

Match List-I with List-II: 
List-I
(Application of Gauss Law)
List-II
(Value of |E|)
A. The field inside a thin shell I. λ2πε0rˆn
B. The field outside a thin shell II. q4πε0R2ˆr
C. The field of thin shell at the surface III. q4πε0r2ˆr
D. The field due to a long charged wire  IV. zero
(Here symbols have their usual meaning and R is the radius of the thin shell) 
 
Choose the correct answer from the options given below: 
1. A-IV, B-III, C-I, D-II
2. A-I, B-II, C-III, D-IV
3. A-IV, B-III, C-II, D-I
4. A-I, B-III, C-II, D-IV
Subtopic:  Gauss's Law |
 87%
From NCERT
NEET - 2024
Please attempt this question first.
Hints
Please attempt this question first.

advertisementadvertisement

A particle of mass m and charge q is placed in a uniform electric field E at t=0 s. The kinetic energy of the particle after time t is:
1. Eqmt
2. E2q2t22m
3. 2E2t2qm
4. Eq2m2t2
Subtopic:  Electric Field |
 84%
From NCERT
NEET - 2024
Please attempt this question first.
Hints
Please attempt this question first.