Question 231: Semiconductors and Logic Gates

Question

The value of power dissipated across the zener diode (Vz = 15V) connected in the circuit as shown in the figure is x $$	imes$$ 10$$-$$1 watt.The value of x, to the nearest integer, is __________.

Accepted Answer

$$i = {7 \over {35}} = {1 \over 5}A$$
$${i_1} = {{15} \over {90}} = {1 \over 6}A$$
$${i_2} = i - {i_1}$$
$${i_2} = {1 \over 5} - {1 \over 6}$$
$${i_2} = {1 \over {30}}A$$
Power across diode; P = V
2
i
2
$$P = 15 	imes {1 \over {30}}$$
P = 0.5 W
$$ 	herefore $$ P = 5 $$	imes$$ 10
$$-$$1
W

Semiconductors and Logic Gates

The value of power dissipated across the zener diode (Vz = 15V) connected in the circuit as shown in the figure is x $\times 10-$1 watt.The value of x, to the nearest integer, is __________.

Choose the correct answer: