Electronics and Communication Engineering - Electronic Devices and Circuits - Discussion

Discussion Forum : Electronic Devices and Circuits - Section 1 (Q.No. 39)
39.
A potential of 7 V is applied to a silicon diode. A resistance of 1 K ohm is also in series with the diode. The current is
7 mA
6.3 mA
0.7 mA
0
Answer: Option
Explanation:

Discussion:
7 comments Page 1 of 1.

Prasad said:   1 decade ago
How it is possible? Please explain anyone.

Saranya said:   1 decade ago
I = V/R.
V = 7v.
R = 1k.

I = (7-0.7)/1000 = 0.007{The forward voltage drop for Silicon diode is 0.7v}.

i.e I = 6.3/1000 = 6.3mA.

Thopu said:   8 years ago
@Saranya.

Explain it clearly.

Mononisha.R said:   7 years ago
I=V/R,
where V=V-Vsi,
Vsi=0.7V and V=7V
R=1K ohm = 1000ohm.

So, I=(7-0.7)/1000.
=6.3/1000,
I = 6.3 mA.

Asad said:   5 years ago
Voltage drop should be considered.

Vikas said:   5 years ago
Yes, voltage drop must be considered because here series term is used.

Shanti Bambhaniya said:   4 years ago
I = V/R.
V = 7v.
R = 1k.

I = (7-0.7)/1000 = 0.007{The forward voltage drop for Silicon diode is 0.7v}.

{The forward voltage drop for Germanium diode is 0.3v}

i.e I = 6.3/1000 = 6.3mA.
(1)

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