A flat, round iron ring 5.00 cm in diameter has a current running through it that produces a magnetic field of at its center. This ring is placed in a uniform external magnetic field of 0.375 T. What is the maximum torque the external field can exert on the ring

an ion is a charged atom or molecule. it is charged because the number of electrons do not equal the number of protons in the atom or molecule. an atom can acquire a positive charge or a negative charge depending on whether the number of electrons in an atom is greater or less then the number of protons in the atom.

it becomes positively charged by charging it

hypothesising or postulating

i believe the answer is a hope it and is correct