Answer:
Explanation:
At the point where net potential is zero , magnitude of potential will be equal .
At point between the given charges potential can be expressed as follows
k q₁ / d x 10⁻² = k 12 x 10⁻⁶ / 4.8 x 10⁻² ( q₁ charge is at distance d from the point )
At other point potential due to both the charges can be expressed as follows
k q₁ / (d+12.15) x 10⁻² = k 12 x 10⁻⁶ / 7.35 x 10⁻²
(d+12.15) / d = 7.35 / 4.8
4.8 d + 58.32 = 7.35 d
2.55 d = 58.32
d = 22.87
Putting this value in first equation
k q₁ / d x 10⁻² = k 12 x 10⁻⁶ / 4.8 x 10⁻²
q₁ / 22.87 = 12 x 10⁻⁶ / 4.8
q₁ = 57.17 x 10⁻⁶
= 57.17 μC
