Question

A junction diode of internal resistance 20 Ω is used for half-wave rectification. If the applied voltage has a peak value of 50 V and load resistance is 800 Ω, then d.c. value of current is ____________.

Options

• 9 mA

• 10.3 mA

• 19.4 mA

• 14.3 mA

Answer 1

A junction diode of internal resistance 20 Ω is used for half-wave rectification. If the applied voltage has a peak value of 50 V and load resistance is 800 Ω, then d.c. value of current is 19.4 mA.

Explanation:

`"Here,  I"_"dc" = ("I"_"m"//pi)`

`"Where", "I"_"m" = "peak current"`

Further,

`"I"_"m" = "v"/"R"_"d" + "R"_"L"`

` = 50/(20+ 800)`

` = 61  "mA"`

`therefore  "I"_"dc" = (61 "mA")/pi `

`= 19.4  "mA"`