Take two identical, nonrotating, 5-M_ε black holes and place them side by side. Add 1 M_ε of neutrons to the left-hand one and 1 M_ε of protons to the right-hand one (without changing the rotation of the black holes). Afterward, how do these two black holes differ?

Question

Quizplus · Accepted Answer

Neutrons have no electric charge, so when one is added to the left-hand black hole, it remains electrically neutral. However, when protons are added to the right-hand black hole, it becomes positively charged. This is because protons have a positive electric charge. Therefore, the left-hand black hole is electrically neutral and the right-hand black hole is positively charged.

Take Two Identical, Nonrotating, 5-Mε Black Holes and Place Them

Take Two Identical, Nonrotating, 5-M_ε Black Holes and Place Them