Electricity and Magnetism Answers

Imagine sitting with two friends around a table, where all three of you have different masses. Calculate the magnitude and direction of the gravitational field in the centre of the table due to your three masses

Two objects are both negatively charged with 0.02 each and are 70 cm apart. What kind of force exist between them and how much?

Proved that in AC circuit average AC power consumed is zero.

Derive the equation of charging and discharging of capacitor (in context of the concept of
electrostatic) when DC voltage is applied?

A mild steel ring having a cross sectional area of 500mm2
and a mean circumference of 400mm
has a coil of 200 turns wound uniformly around it. Calculate
a. The reluctance of the ring.
b. The current required to produce a flux of 800µWb in the ring.

What is the electrostatic force on all the electrons in one of your eyes due to all of the electrons in your other eye? Why don’t you notice this force?

Measure how high you can jump on Earth. From that you can calculate the kinetic energy you had when you started the jump. Use this kinetic energy and the general form of gravitational potential energy to determine how high you could jump on Mars

If the pull on the Earth due to the sun was caused by electrostatic forces instead of gravity, how much charge would need to be on the Earth and how much on the sun so that the Earth’s orbit remained the same?

why the electric field for non-conducting charged plane is surface charge density over 2epsulum
while it equal surface charge denisty over epsulm only on conductor case

1. Find the force between charges of +10.0 µC and -50.0 µC located 20.0 cm
apart.