KCET2017PhysicsCurrent Electricity
In the figure shown, if the diode forward voltage drop is ( 0.2 ~V ), the voltage difference between ( A ) and ( B ) is
Options
- A( 1.3 ~V )
- B( 2.2 ~V )
- C( 00 )
- D( 0.5 ~V )
Correct answer
B. ( 2.2 ~V )
Step-by-step solution
Given I=0.2 ~mA =0.2 10⁻³ ~A ; Voltage drop at diode =0.2 ~V R₁=R₂=5 k =5 10³ Now, voltage drop at R₁=0.2 10⁻³ 5 10³=1 ~V and voltage drop at R₂=0.2 10⁻³ 5 10³=1 ~V Therefore, voltage difference =1+1+0.2=2.2 ~V