WB JEE 2008 | Electronic Devices Question 1 | Physics

A Si and a Ge diode has identical physical dimensions. The band gap in Si is larger than that in Ge. An identical reverse bias is applied across the diodes

The reverse current in Ge is larger than that in Si

The reverse current in Si is larger than that in Ge

The reverse current is identical in the two diodes

The relative magnitude of the reverse currents cannot be determined from the given data only

WB JEE 2008

MCQ (Single Correct Answer)

-0.25

The binary number 10111 is equivalent to the decimal number

WB JEE 2025

MCQ (Single Correct Answer)

-0.25

A diode is connected in parallel with a resistance as shown in Figure. The most probable current (I) - voltage (V) characteristic is

WB JEE 2025 Physics - Electronic Devices Question 3 English

WB JEE 2025

MCQ (Single Correct Answer)

-0.25

Manufacturers supply a zener diode with zener voltage $\mathrm{V}_{\mathrm{z}}=5.6 \mathrm{~V}$ and maximum power dissipation $P_{\mathrm{z}, \max }=\frac{1}{4} \mathrm{~W}$. This zener diode is used in the following circuit. Calculate the minimum value of the resistance $R_s$ in the circuit so that the zener diode will not burn when the input voltage is $\mathrm{V}_{\mathrm{in}}=10 \mathrm{~V}$.

WB JEE 2025 Physics - Electronic Devices Question 2 English

$98.56 \Omega$

$170 \cdot 52 \Omega$

$306 \cdot 21 \Omega$

$412.37 \Omega$

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