Four point charges Q1=+1 mC, Q2=+1mC and Q3=-1mC Q4=+1 are placed in vertices of
ID: 1351308 • Letter: F
Question
Four point charges Q1=+1 mC, Q2=+1mC and Q3=-1mC Q4=+1 are placed in vertices of a square with 2m long sides. Find elektrik field ( magnitude and direction) and electric potential ( magnitude and sign) in the center of the square. Find force actin upon the charge Q1. Find total potential energy of the interaction of the charges. Four point charges Q1=+1 mC, Q2=+1mC and Q3=-1mC Q4=+1 are placed in vertices of a square with 2m long sides. Find elektrik field ( magnitude and direction) and electric potential ( magnitude and sign) in the center of the square. Find force actin upon the charge Q1. Find total potential energy of the interaction of the charges.Explanation / Answer
let E= Electric field
let q= charge strength
let r= distance from charges.
k is a physics constant= 8.99 X 10^9
E=kq/r^2
E = 8.99*10^9*(1*10^-6)
E= 8.99*10^3
E=8990 N/C
electric potential is a scalar value which means that it does not have a direction like E-field does.
let v= electric potential
v=kq/r
we must add all 4 potentials produced from each of the 4 point charges.
kq/r+kq/r+kq/r+kq/r
=k/r(1+1+-1+1)*10^-6
=k/r(2*10^-6)
=8.99*10^9*2*10^-6/(2)
=8990 Volts
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