Question

The reading of the ammeter (\(A\)) in steady state in the following circuit (assuming negligible internal resistance of the ammeter) is ________ A.

• A. 2
• B. \( \dfrac{1}{2} \)
• C. 0
• D. 1

Hint:

In DC steady state, capacitors act as open circuits.

Answer 1

The Correct Option is C

Step 1: Analyze steady state condition.
In steady state, the capacitor behaves as an open circuit and blocks DC current.
Step 2: Simplify the circuit.
Due to the capacitor acting as an open switch, the diagonal branch containing the capacitor does not conduct current. The remaining branches are symmetrically arranged.
Step 3: Apply symmetry of circuit.
Because of identical resistances on both sides of the ammeter, equal currents flow in opposite directions through it.
Step 4: Net current through ammeter.
Since equal and opposite currents cancel out, the net current through the ammeter is zero.