Answer: 1.0 × 10-4 m s-1.
- A 1.0 × 10-4 m s-1
- B 1.0 × 10-3 m s-1
- C 1.0 × 10-2 m s-1
- D 1.0 × 10-1 m s-1
Correct answer: A. 1.0 × 10-4 m s-1
Explanation: Using I = neAvd, vd = I/(neA) = 1.36/[8.5 × 1028 × 1.6 × 10-19 × 10-6] = 1.0 × 10-4 m s-1.
In series, the same current flows through both resistors; in parallel, the current splits between branches and the voltage across each resistor is the same.
Concept context
Ohm's law, resistors, Kirchhoff's laws, Wheatstone bridge, and cells.