Diode -(P-n Junction Diode Forward and Reverse Bias)
Semiconductor Electronics Material Devices and Simple Circuits

150704 Statement I :When a Si sample is doped with Boron, it becomes \(\mathrm{P}\) type and when doped by Arsenic it becomes N-type semi conductor such that \(\mathrm{P}\)-type has excess holes and \(\mathrm{N}\)-type has excess electros.
Statement II : When such P-type and N-type semi-conductors, are fused to make junction, a current will automatically flow which can be detected with an externally connected ammeter.
In the light of above statements, choose the most appropriate answer from the options given below

1 Statement I is correct but statement II is incorrect
2 Both Statement I and Statement II are incorrect
3 Statement I is incorrect but statement II is correct
4 Both Statement I and statement II are correct
Semiconductor Electronics Material Devices and Simple Circuits

150708 The figure shows two diagrams in which diode and resistance are connected. Out of the following statements which one is TRUE?
Diagram(b)
original image

1 diagram (a) forward biased and diagram (b) reverse biased
2 diagram (a) and diagram (b) both are forward biased
3 diagram (a) reverse biased and diagram (b) forward biased
4 diagram (a) and diagram (b) both are reverse biased
Semiconductor Electronics Material Devices and Simple Circuits

150709 A p-n junction diode can withstand up to 20 \(\mathrm{mA}\) current under forward bias. The diode has a potential difference of \(0.5 \mathrm{~V}\) across it, which is assumed to be independent of current. What is the maximum voltage of the battery used to forward bias the diode when a resistance of \(125 \Omega\) is connected in series with it?

1 \(3.0 \mathrm{~V}\)
2 \(2.5 \mathrm{~V}\)
3 \(3.2 \mathrm{~V}\)
4 \(2.0 \mathrm{~V}\)
Semiconductor Electronics Material Devices and Simple Circuits

150710 The voltage-current characteristic of a diode during forward bias is given by \(I=7.8 \times 10^{-5} \mathrm{e}^{6.9 \mathrm{~V}_{\mathrm{b}}}\), where \(I\) is the current in \(\mathrm{mA}\) and \(V_D\) is the diode voltage in \(V\). Find the dynamic resistance of the diode in \(\Omega\) when the current is \(4 \mathrm{~mA}\).

1 18.6
2 21.7
3 28.2
4 36.2
Semiconductor Electronics Material Devices and Simple Circuits

150711 In a \(p-n\) junction diode, an electric field of magnitude \(2 \times 10^5 \mathrm{~V} / \mathrm{m}\) exists in the depletion region. A particle with charge -3 e can diffuse from \(n\)-side to \(\mathrm{p}\)-side, if it has minimum kinetic energy \(0.6 \mathrm{eV}\).
The width of the depletion region of the \(p-n\) junction is

1 \(300 \mathrm{~nm}\)
2 \(600 \mathrm{~nm}\)
3 \(1000 \mathrm{~nm}\)
4 \(1200 \mathrm{~nm}\)
Semiconductor Electronics Material Devices and Simple Circuits

150704 Statement I :When a Si sample is doped with Boron, it becomes \(\mathrm{P}\) type and when doped by Arsenic it becomes N-type semi conductor such that \(\mathrm{P}\)-type has excess holes and \(\mathrm{N}\)-type has excess electros.
Statement II : When such P-type and N-type semi-conductors, are fused to make junction, a current will automatically flow which can be detected with an externally connected ammeter.
In the light of above statements, choose the most appropriate answer from the options given below

1 Statement I is correct but statement II is incorrect
2 Both Statement I and Statement II are incorrect
3 Statement I is incorrect but statement II is correct
4 Both Statement I and statement II are correct
Semiconductor Electronics Material Devices and Simple Circuits

150708 The figure shows two diagrams in which diode and resistance are connected. Out of the following statements which one is TRUE?
Diagram(b)
original image

1 diagram (a) forward biased and diagram (b) reverse biased
2 diagram (a) and diagram (b) both are forward biased
3 diagram (a) reverse biased and diagram (b) forward biased
4 diagram (a) and diagram (b) both are reverse biased
Semiconductor Electronics Material Devices and Simple Circuits

150709 A p-n junction diode can withstand up to 20 \(\mathrm{mA}\) current under forward bias. The diode has a potential difference of \(0.5 \mathrm{~V}\) across it, which is assumed to be independent of current. What is the maximum voltage of the battery used to forward bias the diode when a resistance of \(125 \Omega\) is connected in series with it?

1 \(3.0 \mathrm{~V}\)
2 \(2.5 \mathrm{~V}\)
3 \(3.2 \mathrm{~V}\)
4 \(2.0 \mathrm{~V}\)
Semiconductor Electronics Material Devices and Simple Circuits

150710 The voltage-current characteristic of a diode during forward bias is given by \(I=7.8 \times 10^{-5} \mathrm{e}^{6.9 \mathrm{~V}_{\mathrm{b}}}\), where \(I\) is the current in \(\mathrm{mA}\) and \(V_D\) is the diode voltage in \(V\). Find the dynamic resistance of the diode in \(\Omega\) when the current is \(4 \mathrm{~mA}\).

1 18.6
2 21.7
3 28.2
4 36.2
Semiconductor Electronics Material Devices and Simple Circuits

150711 In a \(p-n\) junction diode, an electric field of magnitude \(2 \times 10^5 \mathrm{~V} / \mathrm{m}\) exists in the depletion region. A particle with charge -3 e can diffuse from \(n\)-side to \(\mathrm{p}\)-side, if it has minimum kinetic energy \(0.6 \mathrm{eV}\).
The width of the depletion region of the \(p-n\) junction is

1 \(300 \mathrm{~nm}\)
2 \(600 \mathrm{~nm}\)
3 \(1000 \mathrm{~nm}\)
4 \(1200 \mathrm{~nm}\)
Semiconductor Electronics Material Devices and Simple Circuits

150704 Statement I :When a Si sample is doped with Boron, it becomes \(\mathrm{P}\) type and when doped by Arsenic it becomes N-type semi conductor such that \(\mathrm{P}\)-type has excess holes and \(\mathrm{N}\)-type has excess electros.
Statement II : When such P-type and N-type semi-conductors, are fused to make junction, a current will automatically flow which can be detected with an externally connected ammeter.
In the light of above statements, choose the most appropriate answer from the options given below

1 Statement I is correct but statement II is incorrect
2 Both Statement I and Statement II are incorrect
3 Statement I is incorrect but statement II is correct
4 Both Statement I and statement II are correct
Semiconductor Electronics Material Devices and Simple Circuits

150708 The figure shows two diagrams in which diode and resistance are connected. Out of the following statements which one is TRUE?
Diagram(b)
original image

1 diagram (a) forward biased and diagram (b) reverse biased
2 diagram (a) and diagram (b) both are forward biased
3 diagram (a) reverse biased and diagram (b) forward biased
4 diagram (a) and diagram (b) both are reverse biased
Semiconductor Electronics Material Devices and Simple Circuits

150709 A p-n junction diode can withstand up to 20 \(\mathrm{mA}\) current under forward bias. The diode has a potential difference of \(0.5 \mathrm{~V}\) across it, which is assumed to be independent of current. What is the maximum voltage of the battery used to forward bias the diode when a resistance of \(125 \Omega\) is connected in series with it?

1 \(3.0 \mathrm{~V}\)
2 \(2.5 \mathrm{~V}\)
3 \(3.2 \mathrm{~V}\)
4 \(2.0 \mathrm{~V}\)
Semiconductor Electronics Material Devices and Simple Circuits

150710 The voltage-current characteristic of a diode during forward bias is given by \(I=7.8 \times 10^{-5} \mathrm{e}^{6.9 \mathrm{~V}_{\mathrm{b}}}\), where \(I\) is the current in \(\mathrm{mA}\) and \(V_D\) is the diode voltage in \(V\). Find the dynamic resistance of the diode in \(\Omega\) when the current is \(4 \mathrm{~mA}\).

1 18.6
2 21.7
3 28.2
4 36.2
Semiconductor Electronics Material Devices and Simple Circuits

150711 In a \(p-n\) junction diode, an electric field of magnitude \(2 \times 10^5 \mathrm{~V} / \mathrm{m}\) exists in the depletion region. A particle with charge -3 e can diffuse from \(n\)-side to \(\mathrm{p}\)-side, if it has minimum kinetic energy \(0.6 \mathrm{eV}\).
The width of the depletion region of the \(p-n\) junction is

1 \(300 \mathrm{~nm}\)
2 \(600 \mathrm{~nm}\)
3 \(1000 \mathrm{~nm}\)
4 \(1200 \mathrm{~nm}\)
Semiconductor Electronics Material Devices and Simple Circuits

150704 Statement I :When a Si sample is doped with Boron, it becomes \(\mathrm{P}\) type and when doped by Arsenic it becomes N-type semi conductor such that \(\mathrm{P}\)-type has excess holes and \(\mathrm{N}\)-type has excess electros.
Statement II : When such P-type and N-type semi-conductors, are fused to make junction, a current will automatically flow which can be detected with an externally connected ammeter.
In the light of above statements, choose the most appropriate answer from the options given below

1 Statement I is correct but statement II is incorrect
2 Both Statement I and Statement II are incorrect
3 Statement I is incorrect but statement II is correct
4 Both Statement I and statement II are correct
Semiconductor Electronics Material Devices and Simple Circuits

150708 The figure shows two diagrams in which diode and resistance are connected. Out of the following statements which one is TRUE?
Diagram(b)
original image

1 diagram (a) forward biased and diagram (b) reverse biased
2 diagram (a) and diagram (b) both are forward biased
3 diagram (a) reverse biased and diagram (b) forward biased
4 diagram (a) and diagram (b) both are reverse biased
Semiconductor Electronics Material Devices and Simple Circuits

150709 A p-n junction diode can withstand up to 20 \(\mathrm{mA}\) current under forward bias. The diode has a potential difference of \(0.5 \mathrm{~V}\) across it, which is assumed to be independent of current. What is the maximum voltage of the battery used to forward bias the diode when a resistance of \(125 \Omega\) is connected in series with it?

1 \(3.0 \mathrm{~V}\)
2 \(2.5 \mathrm{~V}\)
3 \(3.2 \mathrm{~V}\)
4 \(2.0 \mathrm{~V}\)
Semiconductor Electronics Material Devices and Simple Circuits

150710 The voltage-current characteristic of a diode during forward bias is given by \(I=7.8 \times 10^{-5} \mathrm{e}^{6.9 \mathrm{~V}_{\mathrm{b}}}\), where \(I\) is the current in \(\mathrm{mA}\) and \(V_D\) is the diode voltage in \(V\). Find the dynamic resistance of the diode in \(\Omega\) when the current is \(4 \mathrm{~mA}\).

1 18.6
2 21.7
3 28.2
4 36.2
Semiconductor Electronics Material Devices and Simple Circuits

150711 In a \(p-n\) junction diode, an electric field of magnitude \(2 \times 10^5 \mathrm{~V} / \mathrm{m}\) exists in the depletion region. A particle with charge -3 e can diffuse from \(n\)-side to \(\mathrm{p}\)-side, if it has minimum kinetic energy \(0.6 \mathrm{eV}\).
The width of the depletion region of the \(p-n\) junction is

1 \(300 \mathrm{~nm}\)
2 \(600 \mathrm{~nm}\)
3 \(1000 \mathrm{~nm}\)
4 \(1200 \mathrm{~nm}\)
Semiconductor Electronics Material Devices and Simple Circuits

150704 Statement I :When a Si sample is doped with Boron, it becomes \(\mathrm{P}\) type and when doped by Arsenic it becomes N-type semi conductor such that \(\mathrm{P}\)-type has excess holes and \(\mathrm{N}\)-type has excess electros.
Statement II : When such P-type and N-type semi-conductors, are fused to make junction, a current will automatically flow which can be detected with an externally connected ammeter.
In the light of above statements, choose the most appropriate answer from the options given below

1 Statement I is correct but statement II is incorrect
2 Both Statement I and Statement II are incorrect
3 Statement I is incorrect but statement II is correct
4 Both Statement I and statement II are correct
Semiconductor Electronics Material Devices and Simple Circuits

150708 The figure shows two diagrams in which diode and resistance are connected. Out of the following statements which one is TRUE?
Diagram(b)
original image

1 diagram (a) forward biased and diagram (b) reverse biased
2 diagram (a) and diagram (b) both are forward biased
3 diagram (a) reverse biased and diagram (b) forward biased
4 diagram (a) and diagram (b) both are reverse biased
Semiconductor Electronics Material Devices and Simple Circuits

150709 A p-n junction diode can withstand up to 20 \(\mathrm{mA}\) current under forward bias. The diode has a potential difference of \(0.5 \mathrm{~V}\) across it, which is assumed to be independent of current. What is the maximum voltage of the battery used to forward bias the diode when a resistance of \(125 \Omega\) is connected in series with it?

1 \(3.0 \mathrm{~V}\)
2 \(2.5 \mathrm{~V}\)
3 \(3.2 \mathrm{~V}\)
4 \(2.0 \mathrm{~V}\)
Semiconductor Electronics Material Devices and Simple Circuits

150710 The voltage-current characteristic of a diode during forward bias is given by \(I=7.8 \times 10^{-5} \mathrm{e}^{6.9 \mathrm{~V}_{\mathrm{b}}}\), where \(I\) is the current in \(\mathrm{mA}\) and \(V_D\) is the diode voltage in \(V\). Find the dynamic resistance of the diode in \(\Omega\) when the current is \(4 \mathrm{~mA}\).

1 18.6
2 21.7
3 28.2
4 36.2
Semiconductor Electronics Material Devices and Simple Circuits

150711 In a \(p-n\) junction diode, an electric field of magnitude \(2 \times 10^5 \mathrm{~V} / \mathrm{m}\) exists in the depletion region. A particle with charge -3 e can diffuse from \(n\)-side to \(\mathrm{p}\)-side, if it has minimum kinetic energy \(0.6 \mathrm{eV}\).
The width of the depletion region of the \(p-n\) junction is

1 \(300 \mathrm{~nm}\)
2 \(600 \mathrm{~nm}\)
3 \(1000 \mathrm{~nm}\)
4 \(1200 \mathrm{~nm}\)