Three identical point charges, as shown are placed at vertices of an isosceles right angled triangle

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1. Electric Charges and Fields

easy

Three identical point charges, as shown are placed at the vertices of an isosceles right angled triangle. Which of the numbered vectors coincides in direction with the electric field at the mid-point $M$ of the hypotenuse

$1$

$2$

$3$

$4$

Solution

(b) $E_A$ = Electric field at $M$ due to charge placed at $ A$
$E_B$ = Electric field at $M$ due to charge placed at $B$
$E_C$ = Electric field at $M$ due to charge placed at $C$
As seen from figure $|\overrightarrow {{E_B}} |\, = \,|\overrightarrow {{E_C}} |,$ so net electric field at $M$, ${E_{net}} = {E_A};$ in the direction of vector $2$.

Standard 12

Physics

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normal

(KVPY-2017)

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easy

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easy

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medium

Three identical point charges, as shown are placed at the vertices of an isosceles right angled triangle. Which of the numbered vectors coincides in direction with the electric field at the mid-point $M$ of the hypotenuse

Solution

Similar Questions

A total charge $q$ is divided as $q_1$ and $q_2$ which are kept at two of the vertices of an equilateral triangle of side a. The magnitude of the electric field $E$ at the third vertex of the triangle is to be depicted schematically as a function of $x=q_1 / q$. Choose the correct figure.

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