Question:medium
In the diagram shown, the resistance between points A and B is '\(R_1\)' when an ideal diode D is forward biased and is '\(R_2\)' when ideal diode D is reverse biased. The ratio \(R_1/R_2\) is
In the diagram shown, the resistance between points A and B is '\(R_1\)' when an ideal diode D is forward biased and is '\(R_2\)' when ideal diode D is reverse biased. The ratio \(R_1/R_2\) is
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Two 30 ohm resistors are in parallel; the diode is in series with one of them.
Updated On: Oct 1, 2026
- \(2\)
- \(1\)
- \(\frac{1}{2}\)
- \(\frac{1}{4}\)
Show Solution
The Correct Option is C
Solution and Explanation
Step 1: Forward
Two equal resistors in parallel give half of one: $15\,\Omega$.
Step 2: Reverse
The diode blocks the top path, leaving $30\,\Omega$.
Step 3: Ratio
$15/30 = 1/2$. Option (C).
Final Answer:
Option (C). \[ \boxed{\frac{1}{2}} \]
Two equal resistors in parallel give half of one: $15\,\Omega$.
Step 2: Reverse
The diode blocks the top path, leaving $30\,\Omega$.
Step 3: Ratio
$15/30 = 1/2$. Option (C).
Final Answer:
Option (C). \[ \boxed{\frac{1}{2}} \]
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