Three charges 4q, Q, and q are in a straight line in the position of 0, l/2, and l respectively. The resultant force on q will be zero if Q =

(1) – q

(2) –2q

(3) $-\frac{q}{2}$

(4) 4q

Subtopic:  Coulomb's Law |
To view explanation, please take trial in the course below.
NEET 2022 - Target Batch - Aryan Raj Singh
To view explanation, please take trial in the course below.
NEET 2022 - Target Batch - Aryan Raj Singh

Difficulty Level:

Two small spheres each having the charge +Q are suspended by insulating threads of length L from a hook. This arrangement is taken in space where there is no gravitational effect, then the angle between the two suspensions and the tension in each will be

(1) ${180}^{o},\text{\hspace{0.17em}}\frac{1}{4\pi {\epsilon }_{0}}\frac{{Q}^{2}}{{\left(2L\right)}^{2}}$

(2) ${90}^{o},\text{\hspace{0.17em}}\frac{1}{4\pi {\epsilon }_{0}}\frac{{Q}^{2}}{{L}^{2}}$

(3) ${180}^{o},\text{\hspace{0.17em}}\frac{1}{4\pi {\epsilon }_{0}}\frac{{Q}^{2}}{2{L}^{2}}$

(4) ${180}^{o},\text{\hspace{0.17em}}\frac{1}{4\pi {\epsilon }_{0}}\frac{{Q}^{2}}{{L}^{2}}$

Subtopic:  Coulomb's Law |
To view explanation, please take trial in the course below.
NEET 2022 - Target Batch - Aryan Raj Singh
To view explanation, please take trial in the course below.
NEET 2022 - Target Batch - Aryan Raj Singh

Difficulty Level:

Two charges each of 1 coulomb are at a distance 1 km apart, the force between them is

(1) 9 × 103 Newton

(2) 9 × 10–3 Newton

(3) 1.1 × 10–4 Newton

(4) 104 Newton

Subtopic:  Coulomb's Law |
To view explanation, please take trial in the course below.
NEET 2022 - Target Batch - Aryan Raj Singh
To view explanation, please take trial in the course below.
NEET 2022 - Target Batch - Aryan Raj Singh

Difficulty Level:

+2C and +6C two charges are repelling each other with a force of 12 N. If each charge is given –2C of charge, then the value of the force will be

(1) 4 N (Attractive)

(2) 4 N (Repulsive)

(3) 8 N (Repulsive)

(4) Zero

Subtopic:  Coulomb's Law |
To view explanation, please take trial in the course below.
NEET 2022 - Target Batch - Aryan Raj Singh
To view explanation, please take trial in the course below.
NEET 2022 - Target Batch - Aryan Raj Singh

Difficulty Level:

The dielectric constant of pure water is 81. Its permittivity will be

(1) 7.17 × 10–10 MKS units

(2) 8.86 × 10–12 MKS units

(3) 1.02 × 1013 MKS units

(4) Cannot be calculated

Subtopic:  Coulomb's Law |
To view explanation, please take trial in the course below.
NEET 2022 - Target Batch - Aryan Raj Singh
To view explanation, please take trial in the course below.
NEET 2022 - Target Batch - Aryan Raj Singh

Difficulty Level:

Force of attraction between two point charges Q and – Q separated by d meter is Fe. When these charges are given to two identical spheres of radius R = 0.3 d whose centres are d meter apart, the force of attraction between them is

(1) Greater than Fe

(2) Equal to Fe

(3) Less than Fe

(4) None of the above

Subtopic:  Coulomb's Law |
To view explanation, please take trial in the course below.
NEET 2022 - Target Batch - Aryan Raj Singh
To view explanation, please take trial in the course below.
NEET 2022 - Target Batch - Aryan Raj Singh

Difficulty Level:

One metallic sphere A is given positive charge whereas another identical metallic sphere B of exactly same mass as of A is given equal amount of negative charge. Then:

(1) Mass of A and mass of B is the same

(2) Mass of A is more

(3) Mass of B is less

(4) Mass of B is more

Subtopic:  Ways of Charging |
To view explanation, please take trial in the course below.
NEET 2022 - Target Batch - Aryan Raj Singh
To view explanation, please take trial in the course below.
NEET 2022 - Target Batch - Aryan Raj Singh

Difficulty Level:

The force between two charges 0.06 m apart is 5 N. If each charge is moved towards the other by 0.01 m, then the force between them will become

(1) 7.20 N

(2) 11.25 N

(3) 22.50 N

(4) 45.00 N

Subtopic:  Coulomb's Law |
To view explanation, please take trial in the course below.
NEET 2022 - Target Batch - Aryan Raj Singh
To view explanation, please take trial in the course below.
NEET 2022 - Target Batch - Aryan Raj Singh

Difficulty Level:

When 1019 electrons are removed from a neutral metal plate, the electric charge on it is?

(1) –1.6 C

(2) +1.6 C

(3) 10+19 C

(4) 10–19 C

Subtopic:  Ways of Charging |
To view explanation, please take trial in the course below.
NEET 2022 - Target Batch - Aryan Raj Singh
To view explanation, please take trial in the course below.
NEET 2022 - Target Batch - Aryan Raj Singh

Difficulty Level:

Two charges each equal to 2μC are 0.5m apart. If both of them exist inside the vacuum, then the force between them is

(1) 1.89 N

(2) 2.44 N

(3) 0.144 N

(4) 3.144 N

Subtopic:  Coulomb's Law |
To view explanation, please take trial in the course below.
NEET 2022 - Target Batch - Aryan Raj Singh
To view explanation, please take trial in the course below.
NEET 2022 - Target Batch - Aryan Raj Singh

Difficulty Level: