COMEDK · Physics · 19. Current Electricity
Figure below shows a network of resistors, cells, and a capacitor at steady state.
What is the current through the resistance 4 \(\Omega\) ?
- A 1.0 A
- B 0.2 A
- C Zero
- D 0.5 A
Answer & Solution
Correct Answer
(B) 0.2 A
Step-by-step Solution
Detailed explanation
At steady state, capacitor acts as open circuit \(\Rightarrow\) no current through \(3\mu F\) branch and the \(2\Omega\) top-left resistor. Simplified circuit has two active branches. Let left node be \(V_A\), right node = 0 V (ground). The 6 V cell sets the middle wire at +6 V.…
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