Answer: 0.44 A.
- A 0.25 A
- B 0.44 A
- C 0.50 A
- D 0.67 A
Correct answer: B. 0.44 A
Explanation: The parallel combination has emf 2 V and internal resistance 1/2 Ω. Hence I = 2/(4 + 0.5) = 0.44 A.
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.