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# The figure shows some of the electric field lines corresponding to an electric field. The figure suggests that:            1. $$E_A>E_B>E_C$$ 2. $$E_A=E_B=E_C$$ 3. $$E_A=E_C>E_B$$ 4. $$E_A=E_C<E_B$$

Subtopic:  Electric Field |
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If a body is charged by rubbing it, its weight:

 1 remains precisely constant. 2 increases slightly. 3 decreases slightly. 4 may increase slightly or may decrease slightly.

Subtopic:  Electric Charge |
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An electric dipole is placed in a uniform electric field. The net electric force on the dipole:

 1 is always zero. 2 depends on the orientation of the dipole. 3 can never be zero. 4 depends on the strength of the dipole.
Subtopic:  Electric Dipole |
72%
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Given below are four statements:

 (a) The total charge of the universe is constant. (b) The total positive charge of the universe is constant. (c) The total negative charge of the universe is constant. (d) The total number of charged particles in the universe is constant.

Choose the correct option:

 1 (a) only 2 (b), (c) 3 (c), (d) 4 (a), (d)
Subtopic:  Electric Charge |
66%
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A point charge is brought in an electric field. The electric field at a nearby point,

 (a) will increase if the charge is positive (b) will decrease if the charge is negative (c) may increase if the charge is positive (d) may decrease if the charge is negative

Choose the correct option:

 1 (a) only 2 (b), (c) 3 (c), (d) 4 (a), (d)

Subtopic:  Electric Field |
68%
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An electric dipole is placed in an electric field generated by a point charge.

 (a) The net electric force on the dipole must be zero. (b) The net electric force on the dipole may be zero. (c) The torque on the dipole due to the field must be zero. (d) The torque on the dipole due to the field may be zero.

Choose the correct option:

 1 (a) only 2 (b), (c) 3 (c), (d) 4 (d) only
Subtopic:  Electric Dipole |
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A proton and an electron are placed in a uniform electric field.

 (a) The electric forces acting on them will be equal. (b) The magnitudes of the forces will be equal. (c) Their accelerations will be equal. (d) The magnitudes of their accelerations will be equal.

Choose the correct option.

 1 (a), (b) 2 (b) only 3 (c), (d) 4 (a), (d)

Subtopic:  Electric Field |
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A charge Q is uniformly distributed over a large plastic plate. The electric field at a point P close to the centre of the plate is 10 V/m–1. If the plastic plate is replaced by a copper plate of the same geometrical dimensions and carrying the same charge Q, the electric field at the point P will become

1.   zero

2.   5 V m–1

3.   10 V m–1

4  20 V m–1

Subtopic:  Electric Field |
53%
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A metallic particle having no net charge is placed near a finite metal plate carrying a positive charge. The electric force on the particle will be

1.  towards the plate

2.  away from the plate

3.  parallel to the plate

4.  zero.

Subtopic:  Electric Charge |
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Electric charges are distributed in a small volume. The flux of the electric field through a spherical surface of radius $$10~\mathrm{cm}$$ surrounding the total charge is $$25$$ V-m. The flux over a concentric sphere of radius $$20$$ cm will be:
1. $$25$$ V-m
2. $$50$$ V-m
3. $$100$$ V-m
4. $$200$$ V-m

Subtopic:  Gauss's Law |
71%
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