Q.

For the circuit shown below, calculate the value of Iz :

1 25 mA  
2 15 mA  
3 10 mA  
4 50 mA  

Ans.

(1)

I=501000=50mA          R=1000Ω

I=502000=25mA,  Iz=I1000-I2000=50-25=25mA