Practicing Success

Target Exam

CUET

Subject

Physics

Chapter

Electrostatic Potential and Capacitance

Question:

Two infinitely long line charge of same linear charge density λ are arranged as shown in figure. The magnitude of electric field intensity at point P as shown in figure.

Options:

$\frac{K \lambda}{R}$

$\frac{2 K \lambda}{R}$

$\frac{2 K \lambda}{R \cos \theta}$

$\frac{2 K \lambda}{R \sin \theta}$

Correct Answer:

$\frac{2 K \lambda}{R}$

Explanation:

At point P

P = 2Ey

$=2 \frac{K \lambda}{R \cos \theta}\left[\cos \theta-\cos 90^{\circ}\right]$

$=\frac{2 K \lambda}{R}$.