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For a diode, at 10mA DC resistance is 70Ω. The voltage corresponding to 10mA will be ____________

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For a diode, at 10mA DC resistance is 70Ω. The voltage corresponding to 10mA will be ____________

(a) 0.5V

(b) 0.6V

(c) 0.7V

(d) 0.8V

The question was asked in a job interview.

My question comes from Resistance Level topic in section Diode Circuit of Analog Circuits

1 Answer

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Best answer
Correct choice is (c) 0.7V

To explain I would say: Static or DC resistance is the resistance of a diode at its operating point.

Resistance = voltage/current

Therefore, voltage = current x resistance = 10mA x 70 = 0.7V

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