COMEDK · Physics · 19. Current Electricity
In the figure shown above, a cell of negligible internal resistance and emf 22 V is connected to a network of resistors. If the power dissipated in the whole circuit is \(\dfrac{x}{10 R}\), then the value of \(x\) is:
- A 1452
- B 454
- C 1245
- D 1542
Answer & Solution
Correct Answer
(A) 1452
Step-by-step Solution
Detailed explanation
The diamond network forms a Wheatstone bridge. Left arm ratio: \(\dfrac{4R}{8R} = \dfrac{1}{2}\), Right arm ratio: \(\dfrac{2R}{4R} = \dfrac{1}{2}\). Since ratios are equal, the bridge is balanced — no current flows through the horizontal branch (\(R + R = 2R\)), so it is…
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