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NEET 2026
Exam
NEET
Year
2026
Subject
Physics
Chapter
Chapter

NEET 2026 · Physics · Chapter

Consider the circuit shown in the given figure. What will be the...

Consider the circuit shown in the given figure. What will be the charge on the 5\ capacitor in the steady state?
Consider the circuit shown in the given figure. What will be the charge on the 5 μF5\ \mu\text{F} capacitor in the steady state?

Options

  1. A20 μC20\ \mu\text{C}
  2. B30 μC30\ \mu\text{C}
  3. C50 μC50\ \mu\text{C}
  4. D0 μC0\ \mu\text{C}

Correct answer

B. 30 μC30\ \mu\text{C}

Step-by-step solution

In the steady state, the capacitor acts as an open circuit. Thus, no current flows through the middle branch containing the 5 μF5\ \mu\text{F} capacitor and the 4 Ω4\ \Omega resistor.

The steady current II flows only through the 2 Ω2\ \Omega and 3 Ω3\ \Omega resistors.

The equivalent resistance of the circuit is:
Req=2+3=5 ΩR_{\text{eq}} = 2 + 3 = 5\ \Omega

The current in the circuit is:
I=105=2 AI = \dfrac{10}{5} = 2\text{ A}

The potential difference across the 3 Ω3\ \Omega resistor is:
V=I×3=2×3=6 VV = I \times 3 = 2 \times 3 = 6\text{ V}

Since the capacitor branch is in parallel with the 3 Ω3\ \Omega resistor, the potential difference across the capacitor branch is also 6 V6\text{ V}. As there is no current in this branch, the voltage drop across the 4 Ω4\ \Omega resistor is zero.

Therefore, the potential difference across the capacitor is VC=6 VV_C = 6\text{ V}.

The charge on the capacitor is:
Q=CVC=5 μF×6 V=30 μCQ = C V_C = 5\ \mu\text{F} \times 6\text{ V} = 30\ \mu\text{C}

Answer: 30 μC30\ \mu\text{C}
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