Question

Two parallel beams of positrons moving in the same direction will

• A. repel each other
• B. will not interact with each other
• C. attract each other
• D. be deflected normal to the plane containing the two beams

Answer 1

Answer: (C)

attract each other

Answer 2

Direction of current is opposite the direction of motion of electrons. Positron is the antiparticle or the antimatter counterpart of the electron. The positron has an electron charge $+e$. Since direction of current is in the direction of positron, it is experimentally observed that two current carrying conductors attract each other.