Which of the following field configurations is/are possible?
Note: A, B, C are conductors. Other charges may be present in the vicinity.
   
1. I, III
2. II
3. I, II, III
4. none of I, II, III

Subtopic:  Electric Field |
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Given below are two statements: 
 
Assertion (A): Point charges \(q_{1}\) and \(q_{2}\) produce electric field of magnitude \(E_{1}\) and \(E_{2}\) at a point and potential \(V_{1}\) and \(V_{2}\) at the same point. The electric field due to both the charges at that point must be \(E_{1}+E_{2}.\)
Reason (R): The electric potential at that point due to both the charges must be \(V_{1}+V_{2}.\)
 
1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true but (R) is not the correct explanation of (A).
3. (A) is true but (R) is false.
4. (A) is false but (R) is true.
Subtopic:  Electric Field |
 59%
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If there were only one type of charge in the universe, then:
1. \(\oint_{s} \vec{E} \cdot d \vec{s} \neq 0\) on any surface.
2. \(\oint_{s} \vec{E} \cdot d \vec{s}=0\) if the charge is outside the surface.
3. \(\oint_{s} \vec{E} \cdot d \vec{s}=\frac{q}{\varepsilon_{0}}\) if charges of magnitude \(q\) were inside the surface.
4. Both (2) and (3) are correct.
Subtopic:  Gauss's Law |
 87%
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The electric flux through the surface,

(i) (ii)
(iii) (iv)


1. in figure (IV) is the largest

2. in figure (III) is the least

3. in figure (II) is same as in figure (III) but is smaller than figure (IV)

4. is the same for all figures

Subtopic:  Gauss's Law |
 93%
From NCERT
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Given below are two statements: 
Assertion (A): Mass of a body decreases slightly when it is negatively charged.
Reason (R): Charging is due to the transfer of electrons.
 
1. Both (A) and (R) are True and (R) is the correct explanation of (A).
2. Both (A) and (R) are True but (R) is not the correct explanation of (A).
3. (A) is True but (R) is False.
4. (A) is False but (R) is True.
Subtopic:  Electric Charge |
 81%
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Given below are two statements: 
Assertion (A): If electrons in an atom were stationary, then they would fall into the nucleus.
Reason (R): Electrostatic force of attraction acts between negatively charged electrons and positive nucleus.
 
1. Both (A) and (R) are True and (R) is the correct explanation of (A).
2. Both (A) and (R) are True but (R) is not the correct explanation of (A).
3. (A) is True but (R) is False.
4. (A) is False but (R) is True.
Subtopic:  Coulomb's Law |
 66%
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Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R):
 
Assertion (A): If the electric field due to a dipole on its axis line at a distance r is E, then the electric field due to a dipole at the same distance at the equatorial line will be E/2.
Reason (R): Electric field due to dipole varies inversely as the square of the distance.
 
In light of the above statements choose the correct answer from the options given below:
 
1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true but (R) is not the correct explanation of (A).
3. (A) is true but (R) is false.
4. Both (A) and (R) are false.




 
Subtopic:  Electric Dipole |
 68%
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Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R):
 
Assertion (A): Electrons in the atom are held due to coulomb forces.
Reason (R): The atom is stable only because the centripetal force due to Coulomb's law is balanced by the centrifugal force.

In the light of the above statements choose the correct answer from the options given below:
 
1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true but (R) is not the correct explanation of (A).
3. (A) is true but (R) is false.
4. Both (A) and (R) are false.


 
Subtopic:  Coulomb's Law |
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Given below are two statements: 
Assertion (A): A charge \(q\) is placed in a cube of side \(b\). The flux associated with the cube is independent of side length.
Reason (R): Gauss's law is independent of the size of the Gaussian surface.
1. Both (A) and (R) are True and (R) is the correct explanation of (A).
2. Both (A) and (R) are True but (R) is not the correct explanation of (A).
3. (A) is True but (R) is False.
4. Both (A) and (R) are False.
Subtopic:  Gauss's Law |
 87%
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Given below are two statements: 

Assertion (A): When charges are shared between any two bodies, no charge is really lost but some loss of energy does occur.
Reason (R): Some energy disappears in the form of heat, sparking, etc.
 
1. Both (A) and (R) are True and (R) is the correct explanation of (A).
2. Both (A) and (R) are True but (R) is not the correct explanation of (A).
3. (A) is True but (R) is False.
4. (A) is False but (R) is True.
Subtopic:  Electric Charge |
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