In the given figure, a diode $D$ is connected to an external resistance $R=100 \Omega$ and an e.m.f. of $3.5 \mathrm{~V}$. If the barrier potential developed across the diode is $0.5 \mathrm{~V}$, the current in the circuit will be: (1) $35 \mathrm{~mA}$ (2) $30 \mathrm{~mA}$ (3) $40 \mathrm{~mA}$ (4) $20 \mathrm{~mA}$

Home » In the given figure, a diode is connected to an external resistance and an e.m.f. of . If the barrier potential developed across the diode is , the current in the circuit will be: (1) (2) (3) (4)

In the given figure, a diode $D$ is connected to an external resistance $R=100 \Omega$ and an e.m.f. of $3.5 \mathrm{~V}$ . If the barrier potential developed across the diode is $0.5 \mathrm{~V}$ , the current in the circuit will be: (1) $35 \mathrm{~mA}$ (2) $30 \mathrm{~mA}$ (3) $40 \mathrm{~mA}$ (4) $20 \mathrm{~mA}$

Physics | Physics

In the given figure, a diode $D$ is connected to an external resistance $R=100 \Omega$ and an e.m.f. of $3.5 \mathrm{~V}$ . If the barrier potential developed across the diode is $0.5 \mathrm{~V}$ , the current in the circuit will be: (1) $35 \mathrm{~mA}$ (2) $30 \mathrm{~mA}$ (3) $40 \mathrm{~mA}$ (4) $20 \mathrm{~mA}$

The correct Solution is (2)
$\begin{array}{l} \text { Current }=\frac{(3.5-0.5)}{100} \mathrm{~A} \\ =\frac{3}{100} \mathrm{~A}=30 \mathrm{~mA} \end{array}$

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