A positive charge + q 1 is located to the left ofa negative charge - q 2 . On a

Question

A positive charge +q1 is located to the left ofa negative charge -q2. On a line passingthrough the two charges, there are two places where the totalpotential is zero. The first place is between the charges and is4.0 cm to the left of the negativecharge. The second place is 6.2 cm tothe right of the negative charge.
(a) What is the distance between the charges?
1 cm

(b) Find q1/ q2, the ratioof the magnitudes of the charges.
q1/ q2 = 2
(a) What is the distance between the charges?
1 cm

(b) Find q1/ q2, the ratioof the magnitudes of the charges.
q1/ q2 = 2

Explanation / Answer

let the distance between them is dcms given that q1/d-4=q2/4 q1/d+6.2=q2/6.2 hence d=22.5cms and q1/q2=4.629

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