Q. No.The current-voltage characteristic of an ideal \(\mathrm{p \text{-}n}\) junction diode is given by the graph as shown in the following figure:
This diode is connected with a resistance of \(5~\Omega\) in series with it as shown below:
Which of the following shows the dependence of the voltage \(V_{AB}\) and the current \(i,\) when the diode is forward-biased?
(\(V_{AB}\) in volt, \(i\) in ampere)
1.
\(V_{A B}=i\cdot5+0.6\)
2.
\(V_{A B}=i\cdot5-0.6\)
3.
\(V_{A B}=i\cdot5+(0.6-5)\)
4.
\(V_{A B}=i\cdot5+\left(0.6+5\right)\)
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(consider the diodes as ideal.)
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2. |  |
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4. |  |
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| 1. | \(V_o=V_i+E\) |
| 2. | \(V_o=V_i-E\) |
| 3. | \(V_o=V_i,\) only when \(V_i>E\) |
| 4. | \(V_o=V_i,\) only when \(V_i<E\) |
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1. \(V_A>V_B+V_0\)
2. \(V_A<V_B+V_0\)
3. \(V_A>V_B-V_0\)
4. \(V_A<V_B-V_0\)
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| 1. | no current flows in the circuit |
| 2. | current flows anticlockwise |
| 3. | current flows clockwise |
| 4. | current only flows through \(D_2\) and not through \(D_1\) |
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1. zero2. \(4~\text{mA}\)
3. \(2.5~\text{mA}\)
4. \(0.8~\text{A}\)
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1. zero2. \(20\) mA
3. \(40\) mA
4. \(20\sqrt2\) mA
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For the above circuit, the applied voltage \(V(t)\) is periodic and linear, and is shown by the waveform below:
The current flowing through \(R_2\) varies as:
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2. |  |
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1. AND
2. OR
3. XOR
4. none of the above
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