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The $i-v$ characteristics of the diode in the circuit given below are

$$i = \begin{cases} \frac{v-0.07}{500}\:A, & v\ge0.7\:V \\ \:\:\:\:\:\:\:\:0\:A, & v \lt 0.7\:V \end{cases}$$

The current in the circuit is

1. $10\:mA$
2. $9.3\:mA$
3. $6.67\:mA$
4. $6.2\:mA$

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