Electrostatics Question 687

Question: A charged ball B hangs from a silk thread S, which makes an angle θ with a large charged conducting sheet P, . The surface charge density σ of the sheet is proportional to

Options:

A) cotθ

B) cosθ

C) tanθ

D) sinθ

Show Answer

Answer:

Correct Answer: C

Solution:

[c] Tsinθ=σε0K.q ..(i)

Tcosθ=mg .(ii)

Dividing (i) by (ii), tanθ=σqε0K.mg σtanθ



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