Two identical bodies, the charges of which are 5 µC and –15 µC. brought into contact

Two identical bodies, the charges of which are 5 µC and –15 µC. brought into contact. What were the charges of these bodies after that?

Given:

q1 = 5 μC;

q2 = -15 μC;

It is required to find q3 bodies after they have been brought into contact.

According to the law of conservation of electric charge:

After the bodies are brought into contact, their total charge is equal to:

q = q1 + q2.

Then, they were pulled apart:

q3 = q / 2 = (q1 + q2) / 2 = (5 – 15) / 2 = -5 μC.

Answer: the charge became equal to -5 μC