Question

Three charges – q₁, q₂ and – q₃ are placed as shown in the figure. The x-component of the force on –q₁ is proportional to–

• A. $\frac{q_{2}}{b^{2}}–\frac{q_{3}}{a^{2}}\sin\theta$
• B. $\frac{q_{2}}{b^{2}}–\frac{q_{3}}{a^{2}}\cos\theta$
• C. $\frac{q_{2}}{b^{2}} + \frac{q_{3}}{a^{2}}\sin\theta$
• D. $\frac{q_{2}}{b^{2}} + \frac{q_{3}}{a^{2}}\cos\theta$

Answer 1

Answer: (C)

$\frac{q_{2}}{b^{2}} + \frac{q_{3}}{a^{2}}\sin\theta$

Answer 2

x component of force on – q Ž

F₁ cos(90 – q) + F₂

=