Kirchhoff's Laws & Measuring Instruments
The reading of the ammeter in steady state in the following circuit (assuming negligible internal resistance of the ammeter) is ______ A.

Show answer and solution
Answer: (b)
- In steady state the capacitor branch (with its ) carries no current.
- The ideal ammeter joins the bottom nodes, so the left is in parallel with .
- ; total , .
- The current splits equally; the right-hand returns through the ammeter.
- So the answer is (b) .