Electric charges q . q,-2 q are placed at the corners of an equilateral triangle A B C of side l. The magnitude of electric dipole moment of the system is

Question

Electric charges q . q,-2 q are placed at the corners of an equilateral triangle A B C of side l. The magnitude of electric dipole moment of the system is (A) q (B) 2 q l (C) √3 q l (D) 4 q l

Tardigrade Admin · Accepted Answer

<img class="img-fluid question-image" alt="image" src="https://cdn.tardigrade.in/img/question/physics/27bce351b31c237b3e428994038d5b50-.png" /> p text net =√p2+p2+2 p p cos 60° =√3 p=√3 q l (∵ p=q l)

Q. Electric charges $q . q, - 2 q$ are placed at the corners of an equilateral triangle $A BC$ of side $l$ . The magnitude of electric dipole moment of the system is

$q$

$2 ql$

$3 ql$

$4 ql$

$p_{net} = p^{2} + p^{2} + 2 pp cos 6 0^{\circ}$
$= 3 p = 3 ql (∵ p = ql)$

Q. Electric charges q.q,−2q are placed at the corners of an equilateral triangle ABC of side l. The magnitude of electric dipole moment of the system is

q

2ql

3​ql

4ql

pnet ​=p2+p2+2ppcos60∘​ =3​p=3​ql(∵p=ql)

Q. Electric charges $q . q, - 2 q$ are placed at the corners of an equilateral triangle $A BC$ of side $l$ . The magnitude of electric dipole moment of the system is

$q$

$2 ql$

$3 ql$

$4 ql$

$p_{net} = p^{2} + p^{2} + 2 pp cos 6 0^{\circ}$
$= 3 p = 3 ql (∵ p = ql)$