Electric Circuits Answers

An uncharged conducted spherical shells placed in the electric field of positive charge (q). What will be the net flux through the shell. What is the SI unit of electric flux?

What is electric flux,electric field and electric potential inside the charged sphere?

What will be the flux through a closed surface. Why does not contain any charge?

Two charges 2C and -2C are at 0.01m. Calculate the electric field intensity 0.3m in equatorial plane.

Derive expression for the electric field intensity due to an electric dipole at a point on the axis:

1- On the axial line 2- On equatorial line.

And also its cases.

What is electric dipole? Give example. Define electric dipole moment and write its SI unit and its dimensional formula.

Two charges, -16 C and +5.5 C, are fixed in place and separated by 3.7 m. (a) At what spot along a line through the charges is the net electric field zero? Give the distance of the spot to the positive charge in meters (m). (Hint: The spot does not necessarily lie between the two charges.) (b) What would be the force on a charge of +14 C placed at this spot?

The teacher School needs to light up a 9.0 volts bulb, but has a car battery rated at 12.0 volts in the laboratory and a number of connecting wires, resistors, a variable resistor, a voltmeter, an ammeter, a switch, and other devices that can be useful in getting the 9.0 volts needed.you are to design a potential divider to produce the 9.0 volts needed from the materials given, without using a transformer

1. Using calculations, indicate the values of the resistors in the set-up to give you the desired 9.0V.        

2.The bulb becomes dimmer over time with continuous use, not giving out the desired brightness. Suggest what can be done to restore the same brightness as before, without changing the 12.0 V battery.  

2.The bulb becomes dimmer over time with continuous use, not giving out the desired brightness. Suggest what can be done to restore the same brightness as before, without changing the 12.0 V battery.  

Current going into one light bulb with an ammeter

Calculate the sound intensity level  in decibels for a sound wave traveling in air and having a pressure amplitude of  =0.656 Pa.