JEE PHYSICS MCQ: ELECTRIC FIELDS AND CHARGES

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Two equal and opposite charges are placed at points

P

and

Q.

The null point on the line joining them is

View answer and explanation

Correct option: D

Outside the line joining

P

and

Q

Option D (Outside the line joining

P

and

Q

) is correct because the null point due to two equal and opposite charges lies outside the line joining them, closer to the charge with smaller magnitude (in this case, at infinity if the charges are equal).

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Assertion:- Electric field lines do not cut at any point.
Reason:- At any point, there is only one direction of electric field. Statement-I: A positive point charge is brought in an electric field, the electric field at neary by point will increase

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are separated by a distance

r.

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\left( {{\varepsilon _r} = 8} \right)

, then the new force will be ……

N

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5 \times {10^{ - 2}}

coulomb. The force of on the electron is ________ N