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NEET
Exam
NEET
Subject
Physics
Chapter
Capacitance

NEET · Physics · Capacitance

Calculate potential on the axis of a ring due to charge Q uniformly...

Calculate potential on the axis of a ring due to charge Q uniformly distributed along the ring of radius R.

Options

  1. AQ4πεoR2+2z2\frac{Q}{4\pi {{\varepsilon }_{o}}\sqrt{{{R}^{2}}+2{{z}^{2}}}}
  2. B2Q4πεoR2+z2\frac{2Q}{4\pi {{\varepsilon }_{o}}\sqrt{{{R}^{2}}+{{z}^{2}}}}
  3. CQ4πεoR2+z2\frac{Q}{4\pi {{\varepsilon }_{o}}\sqrt{{{R}^{2}}+{{z}^{2}}}}
  4. D2Q4πεo2R2+z2\frac{2Q}{4\pi {{\varepsilon }_{o}}\sqrt{2{{R}^{2}}+{{z}^{2}}}}

Correct answer

C. Q4πεoR2+z2\frac{Q}{4\pi {{\varepsilon }_{o}}\sqrt{{{R}^{2}}+{{z}^{2}}}}

Step-by-step solution

Correct Option is : (C)
Q4πεoR2+z2\frac{Q}{4\pi {{\varepsilon }_{o}}\sqrt{{{R}^{2}}+{{z}^{2}}}}
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