Home
Class 12
PHYSICS
The V-I characteristic of a silicon diod...

The V-I characteristic of a silicon diode is shown in the Fig. 14.17. Calculate the resistance of the diode at `(a)I_(D) = 15` mA and (b) `V_(B)=-10 V`

Text Solution

Verified by Experts

Considering the diode characteristics as a straight line between I = 10 mA to I = 20 mA passing through the origin, we can calculate the resistance using Ohm’s law.
(a) From the curve, at I = 20mA, V= 0.8 V, I= 10mA, V= 0.7 V
`r_(fb) = DeltaV//DeltaI = 0.1V //10 mA = 10 Omega`
(b) From the curve at `V = -10 V, I=-1 muA`,
Promotional Banner

Similar Questions

Explore conceptually related problems

The V-I characteristic of a silicon diode is shown in the Fig. Calculate the resistance of the diode at I_D =15 mA

The V-I characteristic of a silicon diode is shown in the Fig. Calculate the resistance of the diode at V_D =- 10 V

The voltage-current characteristic of a diode during forward bias is given by I = 7.8 xx 10^(-5) e^(6.9V_(D)) , where I is the current in mA and V_(D) is the diode voltage in V. Find the dynamic resistance of the diode in Omega , when the current is 4mA.

In the given circuit diagram. V_B ~~0.6V Calculate the current i in the circuit.

For a cell, the graph between the p.d.(V) across the terminals of the cell and the current I drawn from the cell is shown in the fig. the emf and the internal resistance of the cell is E and r respectively.

ABC is an equilateral triangle of side 2m. If vec(E ) = 10 NC^(-1) then V_(A) - V_(B) is