The diode used in the circuit shown in the adjacent figure has a constant voltage drop of 0.5V at all currents and a maximum power rating of 100mW.What should be the value of resistor R connected in series with the diode for obtaining maximum current?

A PN junction diode when forward biased has a drop of 0.5 V which is assumed to be independent of current. The current in excess of 10 mA through the diode produces large joule heating which damages the diode. If we diode, the resistor used in series with the diode so that the maximum current does not exceed 5 mA

A diode is connected to 220V (r.m.s) a.c. in series with a capacitor as shown in the figure. What is the voltage V across the capacitor is

A lamp having a resistance of 25 ohm is not allowed to pass current more than 5 A. Find the value of the inductance, which must be used in series with the lamp, which is supplid by an a.c. of maximum r.m.s. 325 V at 50 Hz.

Assume that the silicon diode in the circui shown in fig. requires a minimum current of 1mA to be above the knee point (0.7V) of its I-V characteristics. Aslo assume that the voltage across the diode is independent of current above the knee point. If V_(B)=5V , what should be the value of R to estabilish the current of 5mA in the circuit?

In a forward biased silicon diode, current occurs at close to 0.7 V and increase rapdily wiht very small further potential difference increase. What current will flow, when there is a 200 ohm resistor in series with the diode with a 10 V battery across the series combination?

The circuit shown in the figure contains two diodes each with a forward resistance of 30 Omega and with infinite backward resistance. If the battery is 3 V, the current through the 100 Omega resistance (in ampere)

Assume that the silicon diode in the circui shown in fig. requires a minimum current of 1mA to be above the knee point (0.7V) of its I-V characteristics. Aslo assume that the voltage across the diode is independent of current above the knee point. What is the power dissipated in the resistance R and in the diode, when a current of 5mA flows in the circuit at V_(B)=6V ?

Assume that the silicon diode in the circui shown in fig. requires a minimum current of 1mA to be above the knee point (0.7V) of its I-V characteristics. Aslo assume that the voltage across the diode is independent of current above the knee point. If V_(B)=5 V, what should be the maximum value of R so that the voltage is above the knee point?

A 2 mu F capacitor 100 ohm resistor and 8 H inductor are connected in series with an a.c. source. What should be the frequency of soure for which the current drawn in the circuit is maximum? If peak value of emf of the source is 200 V, find the maximum current, inductive reactance, capactive reactance,