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MHT CET 2026 (17 Apr, Shift 2) · Electric Charge & Coulomb's Law

Electric Charge & Coulomb's Law question from MHT CET 2026 (17 Apr, Shift 2)

Q8MHT CET 2026 · 17 APR · SHIFT 2Easy

Electric Charge & Coulomb's Law

Two point charges +e and +4e are kept at a distance 'd' units apart. Third point charge +q is placed between the two charges at a distance 'x' units from charge +e so as to be in equilibrium. The value of 'x' is

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Answer: (a)

  1. Net force on +q+q zero: keqx2=k(4e)q(d−x)2\dfrac{ke q}{x^2} = \dfrac{k(4e)q}{(d-x)^2}.
  2. d−xx=2⇒x=d3\dfrac{d-x}{x} = 2 \Rightarrow x = \dfrac{d}{3}
  3. So the answer is (a) d3\dfrac{d}{3} units.
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