(C) The maximum current $I$ that the diode can handle is given by the power rating $P$ and the voltage drop $V_d$ across the diode:$I = \frac{P}{V_d}

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(C) The maximum current $I$ that the diode can handle is given by the power rating $P$ and the voltage drop $V_d$ across the diode:$I = \frac{P}{V_d} = \frac{100 \times 10^{-3} \, W}{0.5 \, V} = 0.2 \, A$To limit the current to this maximum value when connected to a source voltage $V_s = 1.5 \, V$,we use Ohm's law for the series resistor $R$:$V_s = V_d + I \times R$$1.5 \, V = 0.5 \, V + (0.2 \, A) \times R$$1.0 \, V = 0.2 \, A \times R$$R = \frac{1.0}{0.2} \, \Omega = 5 \, \Omega$

Class 12 Physics Semiconductor Electronics PN Junction and Diode

Medium

$A$ diode operates at a constant potential drop of $0.5\, V$ for all currents and has a maximum power rating of $100\, mW$. If the source voltage is $1.5\, V$,what resistance must be connected in series with the diode so that the current in the circuit is at its maximum safe value? (in $\Omega$)

AIIMS 2018 All AIIMS

A
$200$
B
$6.67$
C
$5$
D
$15$

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Semiconductor Electronics

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PN Junction and Diode

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In an unbiased $PN$-junction,which of the following statements regarding the potential across the junction is correct?

EasyAIPMT 2002

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Which of the following diodes is reverse biased?

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In an unbiased $p-n$ junction:

EasyKCET 2008

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Current $I$ through a given $p-n$ junction when a voltage $V$ is applied across it is given by $I = I_0 \left( e^{\frac{V}{2 V_T}} - 1 \right)$,where $I_0$ and $V_T$ are constants. If $r_d(I)$ is the dynamic resistance of the junction,then $r_d(1000 I_0) = \alpha r_d(10 I_0)$,where $\alpha$ is approximately equal to

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In the following circuit,$PN$-junction diodes $D_1$,$D_2$,and $D_3$ are ideal. For the following potentials of $A$ and $B$,the correct increasing order of equivalent resistance between $A$ and $B$ will be:
$(i) V_A = -10 V, V_B = -5 V$
$(ii) V_A = -5 V, V_B = -10 V$
$(iii) V_A = -4 V, V_B = -12 V$

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$A$ diode operates at a constant potential drop of $0.5\, V$ for all currents and has a maximum power rating of $100\, mW$. If the source voltage is $1.5\, V$,what resistance must be connected in series with the diode so that the current in the circuit is at its maximum safe value? (in $\Omega$)

Similar Questions

In an unbiased $PN$-junction,which of the following statements regarding the potential across the junction is correct?

Which of the following diodes is reverse biased?

In an unbiased $p-n$ junction:

In the following circuit,$PN$-junction diodes $D_1$,$D_2$,and $D_3$ are ideal. For the following potentials of $A$ and $B$,the correct increasing order of equivalent resistance between $A$ and $B$ will be:$(i) V_A = -10 V, V_B = -5 V$$(ii) V_A = -5 V, V_B = -10 V$$(iii) V_A = -4 V, V_B = -12 V$

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In the following circuit,$PN$-junction diodes $D_1$,$D_2$,and $D_3$ are ideal. For the following potentials of $A$ and $B$,the correct increasing order of equivalent resistance between $A$ and $B$ will be:
$(i) V_A = -10 V, V_B = -5 V$
$(ii) V_A = -5 V, V_B = -10 V$
$(iii) V_A = -4 V, V_B = -12 V$