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Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A): In a circuit containing a DC voltage source connected across two parallel branches—where one branch has a forward-biased ideal diode and the other has a reverse-biased ideal diode—the total current drawn from the source depends only on the resistance present in the forward-biased branch. Reason (R)

Options

  1. ABoth Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of Assertion (A).
  2. BBoth Assertion (A) and Reason (R) are true but Reason (R) is not the correct explanation of Assertion (A).
  3. CAssertion (A) is true but Reason (R) is false.
  4. DAssertion (A) is false but Reason (R) is true.

Correct answer

C. Assertion (A) is true but Reason (R) is false.

Step-by-step solution

Assertion (A) is true: In a parallel circuit, a branch with a reverse-biased ideal diode acts as an open circuit (infinite resistance) and draws no current. Therefore, the total current drawn from the voltage source is determined solely by the equivalent resistance of the remaining conducting branches, which in this case is just the forward-biased branch. Reason (R) is false: A reverse-biased ideal p-n junction diode acts as a perfect open circuit, not a short circuit. A short circuit implies zero resistance, which

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