state gov RPSC 2nd Grade Senior Teacher Mock Test Series 2025 Physics Current, Resistance and Electricity Electric Currents in Conductors
The number density of free electrons in a copper conductor estimated 8.5 × 1028 m-3. How long does an electron take to drift from one end of a wire 6 m long to its other end? The area of cross-section of the wire is 1.0 × 10-6 m2 and it is carrying
a current of 1.5 A.
1
8.1 × 104 s
2
5.4 × 104 s
3
12.7 × 104 s
4
4.5 × 104 s
5
Question Not Attempted