Electric Circuits Answers

The electron drift arises due to the force experienced by electrons in the electric field inside the conductor.

But force should cause acceleration.

Why then do the electrons aquire a steady average drift speed?

In Amplitude modulation, Vestigal Side Band (VSB) is one of the technique used to overcome its limitations in terms of power and bandwidth. With this in mind; a. Explain how a VSB signal is generated in the transmitter. b. Draw and compare the frequency spectrum of the original message signal and the spectrum of the VSB signal in a frequency domain. c. Show how the bandwidth of VSB is calculated by writing the equation. d. Give one application of VSB in broadcasting.

A modulating signal m(t)=10cos(2π×103t) is amplitude modulated with a carrier signal c(t)=50cos(2π×105t).

Find the modulation index, the carrier power, and the power required for transmitting AM wave.

Single phase full-wave fully controlled rectifier bridge is operated from a 110 V,

60 Hz supply Draw the load voltage and current and switch voltage waveforms along with supply voltage assume that α = 40o 

What color code corresponds to a resistance of 234x105±10% with a temperature coefficient of resistance equal to 25x10-6/Co?

a current of 3A flows past a particular point in a circuit. calculate the charge that passes through if the time that the current flows for is 1 hour

a current of 3A flows past a particular point in a circuit. calculate the charge that passes through if the time that the current flows for is 1 minute

a current of 3A flows past a particular point in a circuit. calculate the charge that passes through if the time that the current flows for is 5s

a current of 3A flows past a particular point in a circuit. calculate the charge that passes if the time that the current flow is for 1s

four identical cells each of EMF 1.5v and internal resistance of 0.5 ohms are connected in series across an external load of resistance 1.5 ohms. calculate the current that passes through the load