Question

Two wires of identical radius of cross-section rrr, but made of different materials, are joined end-to-end (i.e., in series). If the number density of free electrons (charge carriers) in the two wires is in the ratio 2:5, what will be the ratio of the drift velocities of electrons in the two wires?

A 5:2
B 2:5
C 5:4
D 4:5
Practice Next

Hey! Ask a query

🎓
Think You're Ready for RBI Grade B?
RBI Grade B 2026 Phase 1 Memory Based Paper
  • 200 Questions with Detailed Solutions
  • Section-wise Coverage (GA, English, Quant & Reasoning)