Modern Physics Ques 233
- The circuit shown in the figure contains two diodes each with a forward resistance of $50$ $ \Omega$ and with infinite backward resistance. If the battery voltage is $6 $ $V$, the current through the $100$ $ \Omega$ resistance (in ampere) is
(a) zero
(b) $0.02$
(c) $0.03$
(d) $0.036$
(1997, 1M)
Show Answer
Answer:
Correct Answer: 233.(b)
Solution:
- In the circuit, diode $D _1$ is forward biased, while $D _2$ is reverse biased. Therefore, current $i$ (through $D _1$ and $100 $ $\Omega$ resistance) will be
$ i=\frac{6}{50+100+150}=0.02$ $ A $
Here $50 $ $\Omega$ is the resistance of $D _1$ in forward biasing.
BETA
