Home
Class 12
PHYSICS
If each diode in figure has a forward ha...

If each diode in figure has a forward has a forward bias resistance of 25 Omega and infinite resistance in reverse bias, what will be the values of the current ` I_1 , I_2 , I_3 and I_4? `

A

`I_2=0.40 A, I_4=0.025 A`

B

`I_2=0.25 A , I_4=0.20 A`

C

`I_1=0.05 A , I_3=0.02 A`

D

`I_2=I_4=0.025 A`

Text Solution

Verified by Experts

The correct Answer is:
D
Let R be the effective resistance of the circuit, then
`R=(R_(AB)||R_(EF))+25`
`R_(AB)=125+25=150 Omega, R_(EF)=125+25=150 Omega`
`therefore R=25+150/2=100 Omega`
Since diode in the branch CD is reverse biased, `I_3=0`
Current, `I_1=5/100=0.05 A`
According to Kirchhoff's current rule,
`I_1=I_2+I_3+I_4 " " or " " I_2+I_4=I_1=0.05 A`
`because R_(AB)=R_(EF),so, I_4=I_2`
`2I_4=2I_4=0.05 , I_4=I_2=0.05/2=0.025 A`
Promotional Banner

Topper's Solved these Questions

  • SEMICONDUCTOR ELECTRONICS : MATERIALS , DEVICES AND SIMPLE CIRCUITS

    NCERT FINGERTIPS|Exercise NCERT Exemplar|8 Videos

  • SEMICONDUCTOR ELECTRONICS : MATERIALS , DEVICES AND SIMPLE CIRCUITS

    NCERT FINGERTIPS|Exercise Assertion And Reason|15 Videos

  • SEMICONDUCTOR ELECTRONICS : MATERIALS , DEVICES AND SIMPLE CIRCUITS

    NCERT FINGERTIPS|Exercise Digital Electronics And Logic Gates|16 Videos

  • RAY OPTICS AND OPTICAL INSTRUMENTS

    NCERT FINGERTIPS|Exercise Assertion And Reason|15 Videos

  • WAVE OPTICS

    NCERT FINGERTIPS|Exercise Assertion And Reason|15 Videos

Similar Questions

Explore conceptually related problems

In the given figure, each diode has a forward bias resistance of 30 Omega and infinite resistance in reverse bias. The current I_1 will be :

In the given figure, each diode has a forward bias resistance of 30 Omega and infinite resistance in reverse bias. The current I_1 will be :

In the given circuit, the diode has a forward resistance of 8 Ω and infinite backward resistance. The value of R is :-

Assume that each diode shown has a forward bias resistance of 50Omega and an infinite reverse bias resistance. The current through the resistance 150Omega is

The resitance of the diode in forward bias condition is 20Omega and infinity in the reverse biased condition. The current in the circuit is

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 is 6 V, the current through the 100 Omega resistance (in ampere) is

The circuit shown in the figure contains two diodes each with a forward resistance of 30 Omega and with infinite backward resistance. If the battery is 3 V, the current through the 50 Omega resistance (in ampere) is

The circuit shown in figure (1) Contains two diodes each with a forward resistance of 50 ohm and with infinite reverse resistance. If the battery voltage is 6 V , the current through the 100 ohm resistance is. .