PhysicsNEET 2019Coulomb's law and superposition

Electric Charges and Fields

Two parallel infinite line charges with linear charge densities $+ λ C/m$ and $- λ C/m$ are placed at a distance of $2 R$ from each other in free space. What is the electric field midway between the two line charges?

A.Zero
B. $\frac{2 λ}{π ε _{0} R}$ N/C
C. $\frac{λ}{π ε _{0} R}$ N/C✓
D. $\frac{λ}{2 π ε _{0} R}$ N/C

You have the answer. The worked solution — and why the other three were written — is part of a paid pack.

Electric Charges and Fields

More from this chapter in past papers