Electricity and Magnetism Answers

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.

A solenoid coil.has 10^4 turns of fine insulated conducting wire. The main cross sectional area of the coil is 4000m^2. The magnetic field through the coil changes at a uniform rate of 0.8T to -0.4T in a time of 3s. If the circuit resistance of the coil is 12ohms. Calculate (1).the charge made to pass a cross section of the circuit. (2).the average current (3).the instantaneous current when the magnetic field is zero

Find magnitude of charge passing through coil when area is 5*10^3m^2, number of turns is 10, and resistance is 10ohms with its plane at right angles to a uniform magnetic field B = 0.08T

If ,then f(x)= 2017 then, what is the value
Of f^2017 (2017)?

Define and state the SI Unit of:
Electric field intensity
Calculate the magnitude of the electric field strength at a point 5 10 from an electron which is in a vacuum.

Two charges are attracted by a force of 25 when separated by 10 . What is the force
between the charges when the distance between them is 50 ?

A charged mass of 0.1g is placed inside an electrical field of 9.8 × 10^5 N/C.
Ifthe mass is in equilibrium, then what is the charge of the mass?

2A current is passed along the diameter AB of a circular loop. Find the
magnetic field at the center O of the loop. Radius of the loop is 2cm . pls explain
And what theory should i learn more about it.