In the diode V-I characteristics, the resistance of the circuit is _____________ if a slope is drawn between the voltages 100 V to 200 V and the corresponding current is 5 A and 20 A.

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SSC JE Electrical 14 Nov 2022 Shift 3 Official Paper
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  1. 0.15 Ω
  2. 6.66 Ω
  3. 10 Ω
  4. 20 Ω

Answer (Detailed Solution Below)

Option 2 : 6.66 Ω
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Detailed Solution

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VI characteristics of a diode

The value resistance of a diode is equal to the slope of VI characteristics of the diode.

The slope of the diode is given by:

where, Rd = Diode Resistance

ΔV = V2 - V1 = Change in voltage

ΔI = I2 - I1 = Change in current

Calculation

Given, ΔV = 200 - 100 = 100 V

ΔI = 20 - 5 = 15 A

Rd = 6.66 Ω 

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