Three charges – q 1 , + q 2 and – q 3 are placed as shown in the figure. The x-component…
Physics · JEE Main · NTA Exams — Electrostatics
Three charges – q1, + q2 and – q3 are placed as shown in the figure. The x-component of the force on – q1 is proportional to
- \(\frac{\mathrm{q}_{2}}{\mathrm{~b}^{2}}-\frac{\mathrm{q}_{3}}{\mathrm{a}^{2}} \cos \theta\)
- \(\frac{\mathrm{q}_{2}}{\mathrm{~b}^{2}}+\frac{\mathrm{q}_{3}}{\mathrm{a}^{2}} \sin \theta\)
- \(\frac{\mathrm{q}_{2}}{\mathrm{~b}^{2}}+\frac{\mathrm{q}_{3}}{\mathrm{a}^{2}} \cos \theta\)
- \(\frac{\mathrm{q}_{2}}{\mathrm{~b}^{2}}-\frac{\mathrm{q}_{3}}{\mathrm{a}^{2}} \sin \theta\)
Answer
(B) q _ 2 ~b ^ 2 + q _ 3 a ^ 2
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