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A LED has the following specification: IF (typical) = 9.4mA at 1.7V. Calculate the value of the 'dropper' resistor required if the LED is to be turned on/ off from a +5V source? Answer is in Ohms. Answer: At series resonance, which of the following statements are correct? Select one or more: [3 a. -Capacitive and inductive reactances are equal. C] b. - The phase angle between V3 and I3 is zero. C] c. - i\"r is given by fr :1/(211 LC) C] d. - The current is maximum. C] e. - Total impedance is a minimum and is resistive. Calculate the voltage across the resistor in an RLC circuit at series resonance. The supply voltage is 7 Vrms and current is 0.66mA. All voltages are RMS values. Choose only one option. R = 10 kOhm XL= 13.5 kOhm XC = 17 kOhm O a. -11.2 V O b. 6.6 V O c. 7 V O d. 8.9 VA 2N3705 transistor has a value of hFE of 127.8. When the current through the collector is measured as 50mA, what would be the value of Is in MA? Answer:Calculate the voltage across an initially uncharged capacitor, after it has charged for 3.4ms, via a 660 resistor, from a 15V battery. C = 220HF