ifos โข paper_1 โข electrodynamics
[UPSC IFoS 2010] Electrostatics and Magnetostatics (Q169, 10M)
Consider a long, line charge with charge density \rho_l = 10^{-6}\text{ coulomb/m}. Find the force acting on a dust particle carrying -10^{-9}\text{ coulomb}, 1\text{ metre} away from the line charge in free space.
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