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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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 |
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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 |
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