Two-point charges -q and +9q are kept at r = 12 cm apart as shown. The electric field is zero at:

                 

1.  6 cm from point A toward B

2.  3 cm from point A opposite to B

3.  9 cm from point B towards A

4.  18 cm from the point B towards A

Subtopic:  Electric Field |
From NCERT
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
Links
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh

Two-point charges +2 μC and +6 μC repel each other with a force of 60 N. If a charge -4 μC is added to each of them, the force between them will become

1.  60 N

2.  360 N

3.  20 N

4.  40 N

Subtopic:  Coulomb's Law |
 83%
From NCERT
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
Links
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh

A cone of the radius of base 1 m and height 2 m is placed with its base in the xz plane in a region with the uniform electric field E = 20 i^ V/m as shown in the figure. The magnitude of electric flux linked with the cone is

1.  Zero

2.  10 Vm

3.  20 Vm

4.  40 π Vm

Subtopic:  Gauss's Law |
 72%
From NCERT
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
Links
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh

There are two charges 1 μC and 2 μC. The ratio of the magnitude of forces acting on them due to their interaction will be

1.  1 : 2

2.  2 : 1

3.  1 : 1

4.  1 : 4 

Subtopic:  Coulomb's Law |
 78%
From NCERT
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
Links
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh

The dielectric constant for the metal in electrostatics is

1.  1

2.  0

3.  81

4.  Infinite

Subtopic:  Electric Field |
 75%
From NCERT
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
Links
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh

A cube of side a has a charge q at each of its vertices. The net electric field intensity at its center is: 

( r is the distance between a corner and the center and k = 1/4πε)

1.  Zero

2.  kqr2

3.  k12qr2

4.  k6qr

Subtopic:  Electric Field |
 84%
From NCERT
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
Links
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh

The torque acting on an electric dipole of the dipole moment P in a uniform electric field E is

1.  P.E

2.  P x E

3.  Zero

4.  E x P

Subtopic:  Electric Dipole |
 85%
From NCERT
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
Links
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh

The unit of electric permittivity is

1.  joule/coulomb

2.  volt/meter2

3.  farad/meter

4.  henry/meter

 

Subtopic:  Coulomb's Law |
From NCERT
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
Links
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh

A pendulum bob carries a positive charge. Another positive charge q is held at the point of support, then the time period of bob is (L: length of the simple pendulum)

1.  Greater than 2πLg

2.  Less than 2πLg

3.  Equal to 2πLg

4.  Equal to 2π2Lg

Subtopic:  Coulomb's Law |
From NCERT
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
Links
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh

24 electric dipoles each of dipole moment 2 μCm are packed inside a hollow sphere. The net electric flux through the sphere is

1.  28 μCm2

2.  28 μNm2C

3.  Zero

4.  Infinity

Subtopic:  Electric Dipole |
 92%
From NCERT
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
Links
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh