JEE PHYSICS MCQ: ELECTRIC FIELDS AND CHARGES

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Application +4 | -1

A point charge

q

is placed at origin. Let

\overrightarrow{\mathrm{E}}_{\mathrm{A}}, \overrightarrow{\mathrm{E}}_{\mathrm{B}}

and

\overrightarrow{\mathrm{E}}_{\mathrm{C}}

be the electric field at three points

\mathrm{A}(1,2,3), \mathrm{B}(1,1,-1)

and

\mathrm{C}(2,2,2)

due to charge q. Then

View answer and explanation

Correct option: C

\left|\overrightarrow{\mathrm{E}}_{\mathrm{B}}\right|=4\left|\overrightarrow{\mathrm{E}}_{\mathrm{C}}\right|

Option D (

\left|\overrightarrow{\mathrm{E}}_{\mathrm{B}}\right|=4\left|\overrightarrow{\mathrm{E}}_{\mathrm{C}}\right|

) is correct because the electric field magnitude is inversely proportional to the square of the distance from the charge.

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