A zener diode having zener voltage 8 V and power dissipation rating of 0.5 W is connected across a potential divider arranged with maximum potential drop across zener diode is as shown in the diagram. The value of protective resistance Rp is ....... Ω.

Question

A zener diode having zener voltage 8 V and power dissipation rating of 0.5 W is connected across a potential divider arranged with maximum potential drop across zener diode is as shown in the diagram. The value of protective resistance Rp is ....... Ω. (A)  (B)  (C)  (D)

Tardigrade Admin · Accepted Answer

P=V i 0.5=8 i i=(1/16) A E=20=8+i RP RP=12 × 16=192 Ω

Q. A zener diode having zener voltage $8 V$ and power dissipation rating of $0.5 W$ is connected across a potential divider arranged with maximum potential drop across zener diode is as shown in the diagram. The value of protective resistance $R_{p}$ is ....... $Ω$ .

$P = Vi$
$0.5 = 8 i$
$i = \frac{1}{16} A$
$E = 20 = 8 + i R_{P}$
$R_{P} = 12 \times 16 = 192 Ω$

Q. A zener diode having zener voltage 8V and power dissipation rating of 0.5W is connected across a potential divider arranged with maximum potential drop across zener diode is as shown in the diagram. The value of protective resistance Rp​ is ....... Ω.

P=Vi 0.5=8i i=161​A E=20=8+iRP​ RP​=12×16=192Ω

Q. A zener diode having zener voltage $8 V$ and power dissipation rating of $0.5 W$ is connected across a potential divider arranged with maximum potential drop across zener diode is as shown in the diagram. The value of protective resistance $R_{p}$ is ....... $Ω$ .

$P = Vi$
$0.5 = 8 i$
$i = \frac{1}{16} A$
$E = 20 = 8 + i R_{P}$
$R_{P} = 12 \times 16 = 192 Ω$