Two small spherical balls of mass 10 g each with charges -2 μ C and 2 μ C, are attached to two ends of very li…

Question

Two small spherical balls of mass **$$10 \, 	ext{g}$$** each with charges $$-2 \, \mu \mathrm{C}$$ and $$2 \, \mu \mathrm{C}$$, are attached to two ends of very light rigid rod of length **$$20 \, 	ext{cm}$$**. The arrangement is now placed near an infinite nonconducting charge sheet with uniform charge density of **$$100 \, \mu \mathrm{C} / \mathrm{m}^{2}$$** such that length of rod makes an angle of **$$30^{\circ}$$** with electric field generated by charge sheet. Net torque acting on the rod is:

Accepted Answer

B. $$1.12 \, 	ext{Nm}$$

Answer

A. $$112 \, 	ext{Nm}$$

Answer

C. $$2.24 \, 	ext{Nm}$$

Answer

D. $$11.2 \, 	ext{Nm}$$

Answer & step-by-step solution

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