For an N-channel JFET Idss = 8mA and Vp = -6V, if Vgs = -2V then what is the value of the Drain current? a.2.666 mA b.3.55 mA c.5.33 mA d.3.5 microA

Light-emitting diodes (LEDs) are diodes made with III-V compound semiconductor materials such as aluminum gallium arsenide (AlGaAs), aluminum indium gallium phosphide (AllnGaP) or indium gallium nitride (InGaN), instead of silicon. The LEDs emit light when the device is operated under forward bias. LEDs of different colors have different turn-on voltages VD(on). For example: Color VD(on) Red ~ 1.6 V Yellow ~ 1.7 V (a) Model these five LEDs with a simplified piecewise linear model. (b) A rule of thumb is that it takes about 1 mA of current to "light" an LED while~ 10 mA is needed for it to appear bright. Use the piecewise linear model for the LEDs, for the over-voltage indicator circuit to the right, find the values of Vin which will cause D₁ or D₂ to light (i.e. when ID1 or ID2 exceeds 1 mA). Green ~ 1.8 V Blue ~ 2.8 V loks o mu Vin Red LED Red LED White ~ 3.8 V + lov 21 D₁ D2 -10V o t Vout 오

Question 1 Find values of the intrinsic carrier concentration ni for silicon at 0°C. O 1.5 x 1010 carriers/cm3 O 1.5 x 109 carriers/cm3 O 1.5 x 109 carriers/cm2 O 5 x 109 carriers/cm3

what is the voltage across the diode? what is the current through the diode? what is the current through the 100 ohm in series with the 3V? what is the current through the 5V line?