Two infinitely long parallel wires having linear charge densities $${{\lambda }_{1}}$$ and $${{\lambda }_{2}}$$ respectively are placed at a distance of R metres. The force per unit length on either wire will be $$\left( K=\frac{1}{4\pi {{\varepsilon }_{0}}} \right)$$ [MP PMT/PET 1998; DPMT 2000]

Question

Two infinitely long parallel wires having linear charge densities $${{\lambda }_{1}}$$ and $${{\lambda }_{2}}$$ respectively are placed at a distance of R metres. The force per unit length on either wire will be $$\left( K=\frac{1}{4\pi {{\varepsilon }_{0}}} \right)$$   [MP PMT/PET 1998; DPMT 2000]

TuteeHUB · Accepted Answer

$$K\frac{{{\lambda }_{1}}{{\lambda }_{2}}}{{{R}^{2}}}$$

TuteeHUB · Answer

$$K\frac{2{{\lambda }_{1}}{{\lambda }_{2}}}{{{R}^{2}}}$$

TuteeHUB · Answer

$$K\frac{2{{\lambda }_{1}}{{\lambda }_{2}}}{R}$$

TuteeHUB · Answer

$$K\frac{{{\lambda }_{1}}{{\lambda }_{2}}}{R}$$

1.	Two infinitely long parallel wires having linear charge densities \[{{\lambda }_{1}}\] and \[{{\lambda }_{2}}\] respectively are placed at a distance of R metres. The force per unit length on either wire will be \[\left( K=\frac{1}{4\pi {{\varepsilon }_{0}}} \right)\] [MP PMT/PET 1998; DPMT 2000]
A.	\[K\frac{2{{\lambda }_{1}}{{\lambda }_{2}}}{{{R}^{2}}}\]
B.	\[K\frac{2{{\lambda }_{1}}{{\lambda }_{2}}}{R}\]
C.	\[K\frac{{{\lambda }_{1}}{{\lambda }_{2}}}{{{R}^{2}}}\]
D.	\[K\frac{{{\lambda }_{1}}{{\lambda }_{2}}}{R}\]
Answer» C. \[K\frac{{{\lambda }_{1}}{{\lambda }_{2}}}{{{R}^{2}}}\]

Two infinitely long parallel wires having linear charge densities \[{{\lambda }_{1}}\] and \[{{\lambda }_{2}}\] respectively are placed at a distance of R metres. The force per unit length on either wire will be \[\left( K=\frac{1}{4\pi {{\varepsilon }_{0}}} \right)\] [MP PMT/PET 1998; DPMT 2000]

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