The electron charge is called the Elementary Charge, given by:
The Eletrostatic Force bewteen two changes is giver by Coulomb Law:
Substituing the unknowns, we have:
If you notice any mistake in my english, please let me know, because i am not native.
Answer:
option D) -3m
Explanation:
if 6m is diplaced by -3m then it would be -3+6=3m
feel free to ask if you are confused
Answer:
Force between two charges is given as 143.3 N
Explanation:
As we know that electrostatic force between two point charges is given as
here we know that
also we know that
so we have
so we have
Answer:
Explanation:
radius of the solenoid, r = 0.05 m
length of the solenoid, l = 0.39 m
Magnetic field of the solenoid, B = 2 x 10^-5 T
Number of turns, N = 200
The magnetic field of the solenoid is given by
where, i be the current and n be the number of turns per unit length
n = N / l = 200 / 0.39 = 512.8
i = 0.031 A
Answer: A, protons
Why: it just is