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)
(4) 4q
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyTwo small spheres each having the charge +Q are suspended by insulating threads of length L from a hook. If 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.
2.
3.
4.
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyTwo 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
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyTwo charges +2 C and +6 C are repelling each other with a force of 12 N. If each charge is given –2 C of charge, then the value of the force will be:
1. 4 N (Attractive)
2. 4 N (Repulsive)
3. 8 N (Repulsive)
4. Zero
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe dielectric constant of pure water is 81. Its permittivity will be
(1) 6.91 × 10–10 MKS units
(2) 8.86 × 10–12 MKS units
(3) 1.02 × 1013 MKS units
(4) Cannot be calculated
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyForce 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
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyOne metallic sphere A is given a positive charge whereas another identical metallic sphere B of the exact same mass as of A is given an equal amount of negative charge. Then:
(1) mass of A and mass of B are the same.
(2) mass of A is more.
(3) mass of B is less.
(4) mass of B is more.
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe 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
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyWhen 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
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyTwo 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
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology