a point charge of 5microcoulombs is located at the origin and a point chage q is
ID: 1406058 • Letter: A
Question
a point charge of 5microcoulombs is located at the origin and a point chage q is located at (4.00)cm. The electric force on a pont charge of 2 microcoulombs at (8.00)cm is F=-23Ni. what is the sign and magnitude of the charge q
2-a -5.00microcoulombs point charge is located at x=4.00m, y=-2.00m and a 12microcoulombs point charge is located at x=1.00m, y=2.00m. calculate the electric field at at x=0m. y=-1.00m
3- three charges are placed on the corners of an equilateral triangle with side lenght L. calculate the force on the bootom right charge. Record your answer as a vector in i,j,k. your answer should be in term of k,L and Q
Explanation / Answer
1)
let the charge q at 4 cm is q
electric force between charge is given as
F = k* q1*q2/d^2
net force = F1 + F2
net force = k * 5 mC * 2 mC /0.08^2 + k * q * 2 mC/.04^2
-23 = 9*10^9 * (0.005 * 0.002/.08^2 + q * 0.002/.04^2)
solving for q
q = - 0.00125 C
q = -1.25 mC
the charge q is -1.25 mC
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