Recent content by akhil123

Hello everyone, I am a first year graduate student, wavelets is one of the courses that I am taking presently. As part of the course, I plan to explore application of wavelets in computational electromagnetics (CEM). The idea behind it is to study a few applications where wavelets are used in...

Why is it that a P channel MOSFET is always operated with Vds < 0 i.e source positive with respect to the drain? The book says that carrier always needs to flow from the source to the drain, but would the reverse operation harm the MOSFET in any way? Please explain. Thanks.

That means in the case of a charger, charges flow from the 'phase' pin of the socket to human body and then from the common ground to the neutral part of the socket, since neutral and earthing are connected. Is this explanation correct?

Does that mean that both the neutral and Earth pin are shorted i.e. connected to the ground?

We often use screw driver testers, where we touch one end of the screw driver with our finger and put the pointed end into the mains. The bulb inside the tester glows, indicating that the mains are active. My question is, how is the circuit completed in this case? If charge flows from our body...

In a Van de graff generator, the positive conductor which is connected to the power supply (of high voltage) generates an electric field of high value, which results in dielectric breakdown of air and the positive charge gets "transferred" to the insulated belt. The book says " positive charge...

Thanks a lot!

The dielectric slab will prevent the plates from collapsing onto each other...but what if the dielectric is air? And if the wires used to connect the conductors to the remaining circuit are weak copper strands? I am asking this because,when the net energy change for the (battery+capacitor)...

For any capacitor, whose 2 plates or conductors are being held by a battery to a constant potential difference of V volts, there is a force of attraction between the plates, since they are oppositely charged. What is the force that 'holds' these conductors at their respective positions i.e. what...

Thanks a lot

When a charged body is brought near an insulator, the side facing it acquires a charge of opposite sign because of induction. Is it possible for an insulator to acquire same charge as charged body? (by induction, touching or any other means)

How does a forward biased p-n junction display capacitive effect? I understand that a reverse biased diode can exhibit capacitance with the depletion region acting as a dielectric, but in a forward biased junction, depletion region does not exist,so how does it show capacitive behaviour?