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AIIMS 2012
Exam
AIIMS
Year
2012
Subject
Physics
Chapter
Electrostatics

AIIMS 2012 · Physics · Electrostatics

Electric field outside a long wire carrying charge q is...

Electric field outside a long wire carrying charge qq is proportional to

Options

  1. A1r\frac{1}{r}
  2. B1r2\frac{1}{r^2}
  3. C1r3/5\frac{1}{r^{3 / 5}}
  4. D1r3/2\frac{1}{r^{3 / 2}}

Correct answer

A. 1r\frac{1}{r}

Step-by-step solution

Electric field due to a long charged wire is given as E=λ2πϵ0rE=\frac{\lambda}{2 \pi \epsilon_0 r} where, λ=\lambda= linear charge density. r=r= distance from the wire. ∴E∝@r\therefore \quad E \propto \frac{@}{r}
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