Answer: 24950 ohm.
- A 24950 ohm
- B 25000 ohm
- C 49950 ohm
- D 24900 ohm
Correct answer: A. 24950 ohm
Explanation: V = Ig(G + R). 50 = 0.002(50+R). 25000 = 50+R. R = 24950 ohm.
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.